This idea was pitched to me by @leto97, and now I can't get it out of my head. Because the parallels are, indeed, mindblowing. And to a degree that might suggest the show writers actually took inspiration from this to write Galadriel and Sauron’s story in “Rings of Power”. Can this poem offer some predictions for Season 3, or Season 4?

This poem, "The Demon", is by a Russian poet and is considered a masterpiece of European Romantic poetry, tells of a Demon who falls in love with — and attempts to seduce — a Georgian princess, Tamara. Can he be redeemed by love? Will Heaven even allow it?

Full text here, or here.

1. The Repentant Demon

The somber Demon [Sauron], banished from the heights, Soared aimlessly above the sinful earth, And memories of better days gone by Kept crowding countlessly before his eyes — Those days when he, secure in light’s abode, Shone radiant, a cherub free from stain; When incandescent comets, shooting past, Would pause and lovingly reciprocate His hailing smile of fond benevolence; Those days when, through the timeless mists of space, Desiring knowledge, he would keenly track Nomadic caravans of shining stars Strewn out by God across the dark expanse; Those days when he believed — when he still loved! Divine Creation’s fortunate first-born! [Mairon, the Maia of Aulë] He knew no spiteful enmity, no doubt, Nor was his mind yet menaced by the thought Of barren ages in an endless train… So much, so much was his, that all of it He hadn’t strength enough to recollect!

Long since expelled from Heaven, he now roamed The desert of this world, without repose; One age after another passed for him Just as the minutes pass for humankind: In an unending and unchanging stream. And in dominion o’er this paltry earth, He sowed great evil — but without delight. [corrupted by Melkor/Morgoth] For nowhere did this artistry of his Meet with resistance in the hearts of men — And he grew tired of evil’s tedium.

2. First Meeting with the Princess

A great and lofty house, a sprawling court, [the raft] Did grizzled old Gudal decree be built. Much toil and many tears did that house cost [shipwreck] The long-enduring slaves who raised its walls. From dawn, its shadow creeps across the slopes Of mountains ’round the rock whereon it looms; And in that rock a staircase has been hewn, Descending from a turret to the stream; And down those stairs — a glimmer, now and then — A figure hurries, in a cloak of white: It is the princess — young Tamara [Galadriel] — who Descends to the Aragvi with her pail. [ship to Valinor]

Indeed: the Demon saw her. In a flash Some agitation inexplicable Arose within him, not to be denied; The silent desolation of his soul Was filled now by a glad, salvific sound — And once again he knew the sanctity Of love, of all that’s good and beautiful! Long, long did he now linger to admireThe precious spectacle — and long-dead dreamsOf his past glory, like an endless chain.Of star strung after star strung after starProcessed before his eyes as he looked on. And, shackled by some great but unseen force, He grew acquainted with a newfound pain: For sentiment began to speak within Him — in his long-abandoned native tongue. Were all these signs but preludes of rebirth? [redemption] His menaced heart sought refuge in his mind, And scoured it for shrewd and sneering words — But no! Forgetting was forbidden him By God. Indeed, he wished not to forget!

Down at the river raging far below — Here every step was fraught with threat of death! Great cliffs loomed to the left — and, to the right, The fatal torrent roared, tempestuous. [tempest at sea] It had grown late. Upon the snowy peak The blush burned out. An evening mist arose... And so the caravan picked up its pace.

3. The Dead Groom [Husband]

But on this day a great feast is at hand; The zurna sounds as wine begins to flow. Soon old Gudal [Finarfin] will see his daughter wed; He bade the whole clan gather for the feast. There, on the roof, with carpets rich bespread, The young bride sits among her friends, and laughs; With carefree games and songs her wedding eve Goes by. And evening falls: from distant peaks The half-disc of the sun still spills its rays; The revelers, now clapping rhythmically, Burst out in song, and watch the lovely bride Take up her tambourine and start to dance. Behold, how with her hand so delicate She twirls the tambourine above her head — One moment fluttering just like a bird, The next she sinks, alights — and, looking round, Her moist eyes glimmer softly from beneath [...] This was the last time she would ever dance. She well imagined what the future held — Alas! — for Gudal’s heir and only child [Galadriel is Finarfin's only daughter, and only surviving child], For one as used to freedom as was she: The woeful station of a wife enslaved; A homeland, new and as of yet unknown, And equally unknown [Doriath, Middle-earth] — her husband’s kin [Celeborn, prince of Doriath] So, now and then, a surreptitious doubt Obscured the smiling features of her face; And yet her every movement, as she danced, Was so full of expression and of grace, Of effortless and sweet simplicitiy,

Galadriel: Celeborn was his name. We met in a glade of flowers. I was dancing and he saw me there. Theo: You were dancing? Galadriel: The war seemed so very far away then. When he went to it, I chided him. His armor didn't fit properly. I called him a silver clam. I never saw him again after that. Rings of Power, "The Eye", 1x07

4. Demon In Love

In drops of water glistening like pearls, Upon a body beautiful as hers! Nor has the hand of any mortal man Been blessed to dance across a lover’s brow And unbraid hair as sumptuous as this. No! Never, since the loss of paradise — [the light of the lost Two Trees of Valinor shines on Galadriel's hair] I swear it! — had a flower such as she Spread wide its petals ’neath the southern sun.

For lo, the Demon, clever in deceit, Did rile his fancy with a guileful dream, And in his mind, concealed by darkest night, His lips caressed the lips of his new bride.

“Cry not, dear child, cry not — you cry in vain! Your precious tears will not, like living dew, Fall vivifying on that voiceless corpse: Their water will but blur your brilliant gaze, Their fire will but burn your virgin cheeks! Your groom is far away; he will not see The grief you bear, nor will he know its worth; The fleshless gaze of his transfigured eyes Is now caressed by Heaven’s blessed light; His ears now hear the songs of Paradise… What are the trifling dreams of earthly life, The moans, the tears of some unhappy girl, To one who knows undying happiness? No, no, my dear! A mortal being’s death — My earthbound angel, please believe my words! — Could never, ever be deserving of A single moment of your precious grief! [Sauron sees Galadriel's grief, and asks for her forgiveness]

5. The Demon Reveals Itself

Tamara - Who are you? Oh, how dire the words you speak! Did heaven send you to me, or did hell? What do you want?… The Demon - How beautiful you are! Tamara - No, tell me who you are! Give answer, now..!

The Demon: I am the one whose voice you heard before Amidst the silence of the midnight hour — The one whose thoughts were whispered to your soul, And whose unending sadness you discerned. I am the one whose form you saw in dreams; I am the one whose very gaze kills hope; I am that wretched one whom no one loves; I am the scourge of all my earthbound slaves; I am the king of knowledge — freedom, too; The enemy of heaven, nature’s bane. And now, behold — I fall upon your feet, And bring to you — you, whom I so admire — A quiet prayer of neverending love, I bring to you the first pain I have felt, The first tears I have shed upon this earth. Oh! Hear me — only out of pity! — For You must know: you could, with but a tender word, Restore me unto heaven, unto good; And, in the sacred mantle of your love Once clothed, I would in love arise anew, A newborn angel, newly radiant. Oh! Only hear me out, I pray you, please! — I am your slave — And now declare my love! The moment when I first set eyes on you, I first began to secretly despise My immortality, my evil might; Despite myself, I first came to desire The incomplete and earthly joys of men; It pained me not to live the life you know — And how I dreaded life apart from you! Thus in my bloodless heart a sudden ray Of light has broken forth, to shine, to live — While all my sorrow, deep in that old wound, Keeps stirring, like a serpent long asleep. What is eternity, without you there? What good, the boundlessness of my domain? They’re nothing, save for empty, ringing words, A sprawling church — with no divinity! Tamara: Begone, O clever spirit! Leave me be, And speak no more! I cannot trust you, friend! O Lord, Creator, hear me!… What is this? I cannot pray!… My poor deluded mind Is by some deadly venom overcome! Your words would doom me to the fires of Hell, Your words are fire and poison, nothing more... [Sauron reveals himself to Galadriel]

6. The Demon Temptation (he asks the Princess to help him achieve redemption)

There is an ocean vast, ethereal, Where without rudders, without masts or sails, Drift effortlessly, through eternal mists, The graceful choirs of luminaries bright; Across the boundlessness of heaven’s fields Roam sinuous and sheep-like flocks of clouds Intangible, and leaving not a trace; The hour of parting, or reunion’s hour Means neither joy nor misery to them; For they no longing for the future know, Nor do they feel regret about the past. You too, my dear, need only think of them On days of harrowing adversity; Be too, like them, without a single care, Without concern for any earthly thing! [Sauron tempt Galadriel into joining him]

7. The Demon torments the Princess

As soon as night, its somber shroud outspread, Obscures the towering Caucasian peaks, And the entire world below, bewitched By some enchanted word, falls still, And nothing moves, save for some withered grass Stirred by the wind that steals along a cliff And soon inspires a bird that shelters there To spread its wings and flutter in the dark, [Galadriel is tormented by visions of Sauron, via Nenya]

For surely you have noticed: day by day I’m wilting, victim of some poison vile! A clever spirit surely torments me With some dark dream that I cannot resist; I’m lost, my end is near — take pity, please! [Tamara tells her kin she's being tormented by a "clever spirit" and needs to escape it = Galadriel tells the same to Elrond]

8. The Demon visits the Princess

While far below, beneath the vineyard vines, Insatiably imbibing heaven’s dew, A flower spreads its petals in the night — As soon, I tell you, as the golden moon Ascends the sky in silence o’er the peaks, To steal a loving glance at you, my dear... It’s then that I’ll come flying to your side, And linger with you till the morning star, And waft delightful dreams of purest gold Upon the silken lashes of your eyes...” [Sauron comes for Galadriel, at last, in Season 2]

And then the wondrous voice withdrew from her, And, word by word, its music died away; Now startled, she jumps up and looks around... A painful longing, inexpressible, Now seized her breast; and nothing, next to this, Was any sadness, fear, or ecstasy: Her every passion seethed within her heart; It was as if her soul had burst its chains, And flames were coursing through her every vein — [Sauron stabs Galadriel with Morgoth's crown]

And that same voice, so gloriously new, Seemed still to resonate from ear to ear. Near morning, at long last, a longed-for sleep Sank down and shut her weary, reddened eyes; But sleep too stirred her disconcerted thoughts With some uncannily prophetic dream: A visitor had come from far away, And, radiant with rays of unseen suns,

He stood there, gently bowed above her bed; He stood there — and his loving gaze beheld Her with such sadness, with such tenderness — And with, it seemed, compassion most profound. This was no angel sent there from on high; No guardian ordained for her by God; No halo spun from iridescent rays Adorned the locks that ringed that handsome face. Nor yet was this some awful fiend of Hell, Enduring torment for his many sins — No, no! He looked like lucid evening — Not night, not day — not dark, not light!

8. The Princess choses "death" to resist the Demon

Give up your child, bereft of sanity, To the most holy convent’s certain care, Wherein our Lord and Savior all sustains; Before His Face I’ll pour my every tear. No smiles, no joys are left me in this world… Like relics shrouded in serenity, May I too find the shelter of a cell — As of a tomb — long, long before my time…” [Galadriel jumps to her death to escape Sauron]

9. The Princess is sent to a Sanctuary by her kin, to protect her from the Demon

So, to a monastery far away [future Rivendell]Her kinfolk [Elves] sorrowfully sent the girl,And there in modest clothes, from sackcloth sewn, She humbly wrapped her ever youthful breast.

9. In spite of her prayers, the Demon's temptation and her desire for him still endure on her heart

But still, beneath her nun’s attire — just as It had beneath a dress of patterned gold — That same illicit, sinful fantasy Kept beating in her heart, unfadingly. Before the altar, in the candlelight; Amidst her solemn, sacred songs of praise;

Amidst her prayers, the same familiar voice Would oft assail her ears with tempting words. Along the gloomy temple’s mighty vault, A shape she seemed to know would sometimes glide, Without a noise, with no trace left behind, Through clouds of incense rising weightlessly. He shone there, silent, like a star, and lured Her, called to her... Where would he have her go?

What happens next in the poem? Hypothetical predictions for Season 3?

1. The Demon lingers around the sanctuary

In the poem, the Demon goes to the monastery to claim the princess. At first, he hesitates and does not dare to enter, and “violate their blessed sanctity”: 

A shroud ethereal of evening mist In darkness clothes the sleeping Georgian hills. True to his custom, in the still of night, The Demon flew about the cloister walls. But for a long, long while he didn’t dare To violate their blessed sanctity. Indeed — if for a moment — he seemed poised To cast aside his merciless intent. There, lost in thought beside that lofty wall, He paced about — and where his footsteps fell, The leaves would tremble in the windless shade. Again he lifts his gaze: again he stares Into her window, where the lamp still shines: [the sun still shines?] Long has she waited, waited for someone! And then, amidst the all-embracing quiet, Some graceful fingers strum the chonguri, And suddenly a lovely song resounds; Its notes drift forth, and play without respite, As measuredly as tear falls after tear. So tender, so exquisite was the song That it might well have come here from on high, Composed in heaven for this sinful earth! How like an angel’s voice — an angel who Desired to see some long-lost friend below, And secretly descended from the clouds To sing to that dear friend of days gone by To lend some sweetness to their suffering... And thus love’s ache, love’s longing restlessness, First pierced the Demon’s heart — and, knowing now The fear that love entails, he wished to flee, To flee — and yet his wings refused to move! What miracle is this? A heavy tear Falls from his faded eyes — falls to the ground — And to this very day, outside that cell, Beneath that window, one can see a stone Burned straight through by a tear as hot as fire — By an infernal and inhuman tear!

2. The Demon's love for the Princess is too strong for him to stay away

Eventually, the Demon decides to enter the sanctuary, and confess his love for her: 

He enters now — his heart prepared to love, His soul no longer shutting out the good, Believing that a long-awaited life — A new life — a new day — was now to dawn. The vague anxiety of boundless hope, The fear that lurks in mute uncertainty — These unfamiliar feelings filled his soul, These feelings known to all who have known love. Alas, they did but augur things to come!

3. The Demon fights a God's messenger to get to the Princess (and wins)

When the Demon enters the sanctuary, he discovers a "agent of God" is there, protecting the princess’s soul against him:

He enters, looks — and looming there, beholds God’s messenger, the guardian angel who Stood watch above that sinner beautiful, His brow bathed in a pure celestial light, His smile impassive, and his shining wings Protecting her from her soul’s enemy; And suddenly a ray of Heaven’s light Shone forth and smote the Demon’s unclean eyes; Where words of love might have caressed his ears, An onerous reproach now thundered forth: “O restless spirit, full of wickedness, Who called you here in midnight’s tranquil dark? There are none in this place who worship you; Nor has the breath of evil breeched these walls. Dare not transgress, dare not in sin draw near To one I hold in love and sanctity. I bid you speak: who summoned you?” To this, The evil spirit glowered in reply, His gaze now burning red with jealousy; And in his demon’s soul again was stirred That age-old poison — hatred of the good. “She’s mine!” he bellowed, with abysmal might. “Abandon her, for I have laid my claim — While you, her guardian, have come too late, And you are not to judge her, or judge me. Upon her heart, replete with sinful pride, I have already set my awful seal; There’s nothing sacred here for you to save; Here, I am master now; here I now love!” The Angel, overcome, with eyes downcast, Looked one last time upon the wretched girl, And slowly, beating high his shining wings, He rose, and plunged into a sea of light.

4. The Demon confesses his eternal love for the Princess

Coming out victorious of his fight against this “Angel of Light”, the Demon eventually gets to the princess, and confesses his eternal love for her: 

Tamara - So why, why do you now profess your love? The Demon - Why do I love you, lovely girl? Alas, I do not know myself! I only know That, full of newfound life, from my vile brow I’ve finally removed my crown of thorns, And cast it — all that was — into the dust. My heaven and my hell are in your eyes; I love you with an otherworldly fire; I love you in a way you cannot love: With all the ecstasy, with all the force Of thoughts immortal, and immortal dreams. For since the world began, deep in my soul, Your captivating image was engraved; Long did that image drift, beyond my reach, Through the eternal ether’s wilderness; Long, long disquieting my every thought, The sweet name you now bear did sound to me; And in those days of bliss, in paradise, You were the only blessing that I lacked. Oh, if, poor girl, you could but understand What neverending anguish I have known! [...]

5. The Princess is conflicted: she loves the Demon but wants to be on God's side

The princess still resists the Demon, and accuses him for stealing her peace, and tormenting her, but she’s conflicted because she’s in love and wants the Demon in her heart:

Tamara - Hush, hush, someone might hear us! The Demon - We’re alone. Tamara - But God sees all! The Demon - He will not deign to look: He has eyes but for Heaven — not for earth! Tamara - And what of punishment? The fires of Hell? The Demon - What of them? You will share their flame with me! Tamara - Be who you may, my uninvited friend — You’ve robbed me of my peace forever... Yet — Poor sufferer! — I cannot help but hear Your tale of sorrow with a secret joy.  But what awaits me if your feeling’s feigned? Or what if you, concealing some deceit... Have mercy, please! What love do I deserve? Of what good is my wretched soul to you? Could I mean any more to God above Than all the girls who did not draw your eye? Alas, they too are good, and beautiful, Their chaste sheets too, like those on this nun’s bed, Were never crumpled by a mortal hand... No! You must swear a sacred oath to me... You must tell me — for you can see my tears; You can discern this sinful woman’s dreams! How could you help but strike fear in my soul? But still — you understand, you know all things, And surely you will show me charity! So, swear to me... That, from this moment forth, You do renounce all things acquired in vice — Or can it really be that there remain No oaths or promises you will not break?

6. The Demons promises to abandon his evil pursuits, if he can have the Princess' soul, for them to be together

Then, the Demon makes the ultimate love confession, in which he swears to abandon all of his evil pursuits for her, and take her to heaven, where they can be together:

The Demon - I swear to you now — by creation’s dawn, I swear to you now — by its final day, I swear by evil’s base ignominy, And by the triumph of eternal truth, And by the bitter torment of defeat, And by the short-lived dream of victory; And by the hope of seeing you again, By separation menacing anew. I swear to you now by the spirit hosts, And by the fate of demons in my thrall, And by the swords of angels passionless — Those ever-watchful enemies of mine; I swear to you by Heaven and by Hell, By all that’s holy on this earth — by you: I swear to you now by your final glance, And by the first tear that you ever shed, And by the breath of your unspiteful lips, By every ringlet of your silken locks; I swear to you by bliss, by suffering — And more than all of this: I swear by love. I now renounce my lust for cold revenge; I now renounce my every prideful thought; From this day forth, false words of flattery I will not pour, like poison, in men’s ears; My inmost wish is to be reconciled With God. I want to love, I want to pray, I want now to believe — believe in good. With this repentful tear, I’ll wipe away — Upon a brow now worthy of your love — The ashen traces left by Heaven’s fire; And may this world, in placid ignorance, Live on, and prosper — I’ll not interfere! Believe me, lovely girl! I am the first To understand you, and to know your worth. In choosing you as my most sacred prize, I choose to lay my power at your feet. But for an instant of your gift of love, I offer you all of eternity. Have faith, Tamara, in my constancy, My greatness both in evil and in love — For I, the ether’s freedom-loving son, Will transport you to realms above the stars, And you will be the empress of the sky, My sole companion, and my only love; And there — without regret, without concern — You’ll soon regard this earth for what it is: A place where no true joy is to be found, Nor any beauty that is long of life; A place of naught but sin and sin’s reward; A place where only petty passion dwells, A place that’s home to no one capable Of hating — or of loving — without fear. Or do you truly not know what it is — The momentary love of humankind? The youthful agitation of the blood? But as the days race by, the blood grows cold! Do lovers long endure when forced apart? Who can resist the lure of novelty? Who can withstand the boredom, the fatigue Of indefatigable fantasy? No! Not for you, my love, are all these things! Nor yet has cruel Fate ordained for you To waste away in these repressive walls, A slave to others’ jealous crudity, Amidst the meager-spirited and cold, Amidst false friends and outright enemies, Amidst your anxious fears and fruitless hopes, Amidst your empty and oppressive toil! No! Woefully, behind these lofty walls, You’ll not live on, your passion’s flame snuffed out, Amidst orisons, equally removed From the divine and from humanity. No, no, my lovely creature: You were meant For an entirely different kind of life; A different sort of suffering awaits, As do the depths of other, unknown joys. Abandon all your previous desires, And leave this wretched world unto its fate — And in exchange, I’ll open up for you Proud knowledge’s unplumbable abyss; A host of spirits, bound to me in thrall, I’ll cast before your feet, to serve your whim; To you, my beautiful, my love, I’ll give Maidservants magical and light as air; And for your head, from off an eastern star I’ll wrest a brilliant crown of purest gold; I’ll rob some flowers of their midnight dew, And set them in that crown like precious pearls; I’ll steal some crimson from the setting sun, And wrap it tenderly about your waist; I’ll saturate the very air you breathe With breath of flowers fragrant and pristine; And every minute I’ll caress your ears With wondrous notes of otherworldly strings; I’ll raise exquisite mansions; you will dwell In halls from turquoise and from amber wrought; I’ll swim down to the bottom of the sea, I’ll soar beyond the heavens’ highest clouds; I’ll give you all, all that the earth can give — Just love me!..

7. The Demon kisses the Princess, and takes her soul

The Demon kisses the princess and she dies.

And with that, he dared to touch His lips, aflame with an infernal fire, To hers, which trembled as they met his kiss. Her pious supplications had been met By words filled with the power to seduce; A mighty gaze now looked into her eyes, And scorched her. In the darkness of the night, He shone forth, looming high above her now, A deadly blade — yet irresistible. Alas! The evil spirit did prevail! The deadly venom of the Demon’s kiss In but an instant pierced her fragile breast. A terrible and torment-laded cry Now rent the silence of that tranquil night. That cry held everything: both love and pain, Both accusation and one final plea, A last farewell, pronounced in hopelessness — A farewell to her still-young earthly life

8. The God's messenger returns to fight the Demon for the Princess' soul.

The Demon has the princess's soul, now. But the "Angel of Light" returns to fight him. And the princess, seeing the Demon's true form, is now terrified of him, and sides with her guardian angel, instead.

Amidst a blue, ethereal expanse A holy angel sent by God above Flew onward, borne aloft by wings of gold, And bearing, in his merciful embrace, A sinful soul far from the world below. And with his mild and blessed words of hope He drove away the soul’s remaining doubts, And with his tears of love he washed from it All trace of misdeed, and of suffering. And from afar, the songs of paradise Already reached their ears — when suddenly, Abruptly cutting off the path ahead, A hellish spirit rose from the abyss, As savage as a roaring whirlwind’s rage, Yet shining like a bolt of lightning bright — And proudly, in his mad audacity, He bellowed at the angel: “She is mine!” And, holding back its terror with a prayer, Tamara’s sinful but repentant soul Pressed close against its guardian angel’s chest — For its eternal future was at stake. Again the Demon loomed before her — but, Dear God, could she have recognized him now? For how malicious had his eyes become! And how corrupted by the deathly blight Of enmity that never, ever ends! And how sepulchral was the blast of cold That issued from that dead, unmoving face! “Begone, O somber spirit of despair!” God’s mighty angel thundered in response. “You were allowed to triumph for a time, But now the time has come for God to judge, And in His judgment He is merciful; The days of tribulation now are past; As from her earthly robe of sinful flesh, She has at last been freed from evil’s chains. Know this: long have we here awaited her! For hers was one of those souls so designed To live a life that lasts but for a flash, A life of torment unendurable, A life of unattainable delight: From finest ether the Creator wove The living fabric of these precious souls; They were not fashioned for the world below, For was the world below devised for them! This weary soul has paid a cruel price For all the doubts it harbored while on earth... Above all, though, it suffered, and it loved — And Heaven’s gates stand open now — for love!” And with forbidding eyes the angel looked Once more upon the Demon come to tempt, And, with a joyous wingbeat rising high, He plunged into the radiance of heaven. The vanquished Demon could do naught but curse His dreams long-cherished  — his demented dreams! For once again he found himself alone — Alone, alone in all the universe — Without a hope — without a hope of love!

Could this, actually, play out in "Rings of Power"?

The answer is yes.

Sauron (in spiritual form or through visions, illusions or dreams) lingers around Rivendell (or Lindon), looming over Galadriel, calling for her (or something of that sort); 

The Elves would somehow realize this; and Gandalf comes into the picture to help (he’s a “Angel of Light” and a “agent of God”, literally, as Maia of Manwë); 

Eventually, Sauron arrives, in the flesh, to take the Three Elven rings of power and claim Galadriel as his; 

He fights with Gandalf (the guardian over Galadriel), and wins; 

He gets to Galadriel: he wants to take her to the Unseen world, where they can be together;

Galadriel succumbs to Sauron/darkness, at last, and he takes her spirit to the Unseen world, where she sees his true form (like Mirdania in 2x04), for the first time, and realises just how evil and corrupted he truly is (no chance of redemption);

Gandalf arrives to fight Sauron in the Unseen world (because he's also from that realm, and has the power to do this), and wins.

Galadriel realises her mistake, and terrified of Sauron's true form, sides with Gandalf/The Light.

The poisoned wound—healed by Elrond, yet with lingering effects, you say? Hmm… that sounds familiar.

Of course, Tolkien never explicitly confirmed that Celebrian’s capture was carried out on Sauron’s direct command. Yet, the circumstances raise questions. Why would the Orcs target Celebrian rather than Elrond himself, who was not only a renowned warrior but also a direct threat to Sauron’s designs? Celebrian, by contrast, is rarely depicted as a warrior or political leader like her mother Galadriel. Most often, she is mentioned only in her role as Elrond’s wife.

The nature of her injury also leaves room for speculation. The poisoned wound inflicted upon her recalls the Morgul-blade injury Frodo received, a wound intended not just to harm, but to corrupt, enslave, and bind him to the darkness. If this wound was not random but deliberate, could it have been designed to awaken darkness within her?

A part of evil inherited from her parent - Sauron. This scenario would explain Sauron’s particular interest in capturing her — not as a hostage, but as one he intended to claim and bind fully to himself. Through the poisoned wound, Sauron might have sought to draw her toward his side, making her a powerful ally capable of even surpassing Galadriel. The same way as he tried to achieve this by stabbing Galadriel.

His body has recovered, but his soul has suffered. Shaw says he's first on the list...

Lines like “to find the light, we must first touch the darkness,” “Was it truly to fight the darkness, or was the darkness calling to you?” and “your search for Morgoth’s successor should have ended in your own mirror” should mean something in the end, right?

Also, during Galadriel’s fight with Sauron, the choir sings in Quenya about inevitable corruption, which seems to hint at what’s coming.

There’s also the part about making two rings:

"There is too much power for one object. There should be two. We are making two."

Why tell us there are two powerful objects? Why not three like in the books from the very beginning? Halbrand obviously wants to make two rings, one for himself and one for Galadriel, to give them both power.

We know Nenya represents Galadriel and the One Ring represents Sauron. So maybe these two rings, which have never been made, represent Halbrand and Galadriel. Two rings = two powerful people.

On top of that, there’s the stabbing scene that seems to leave a lasting effect on Galadriel (we see black veins, like in The Hobbit references) at the end of the episode. Many fans have noticed this, and it seems like a clue to what happened to Galadriel.

My guess is that the stab either has something to do with sharing Morgoth’s power or with accelerating her corruption—corruption that may have taken root because of seeds Morgoth planted long ago. If Galadriel is indeed being influenced by darkness even before she encounters Sauron, as Elrond and Adar suggest, perhaps Morgoth intended for her to become his true successor, with Sauron serving her—not the other way around.

Sauron, after all, is a fallen Maia who has already proven to be a poor leader: repeatedly defeated, prone to questionable decisions, and on a path toward ultimate ruin. Yet he is a strong and loyal servant under a competent ruler. Galadriel, by contrast, is a powerful, capable, and ambitious leader, possessing a combination of leadership qualities few can rival. And Morgoth knows this.

The fact that they happen to be together in the Southlands, led by Galadriel and Halbrand following her, and the way her “eye” is the opening scene in the episode called The Eye, seems like a indication of her connection to dark power and bigger plans for her.

So, whatever the source of the dark power is, Galadriel will emerge stronger and more determined, more powerful than Sauron, because she resists the temptation that he could not, that's why he feared her.

Bonus: Sauron was never in the void, Morgoth was. She could reference Morgoth affecting everyone from the void including Sauron who was his servant

OMG, Indeed, she said so in The Hobbit! And indeed, Sauron never went to the Void!