Recently Ocean Keltoi wrote a thread about what pagans can learn from the Bible. He basically claimed that the Bible is an incredible resource for pagans with regards to magic, offerings, sacrifice, and both historical and mythological storytelling, adding that hatred of Christianity stops pagans from appreciating that and thus "blocks one's ability to grow".
I'm going to be honest, that thread was kind of an L from Ocean. But I will say that the Bible could be a resource, depending exactly on what you're looking for. Because if you're looking for "pagan practice" you're probably not going to find it. Or, if you do, it's largely going to be from the perspective of people who despised the various polytheistic cults and traditions that surrounded them at the time. I suppose if you're looking for something to base Christian magic or the like on, I think it'd be more useful to look into the systems of (again, Christian) folk magic that actually used the Bible in invocations or spell-casting.
But here's what I would prefer to gleam from the Bible, if anything, as relevant strictly to my own approach:
Henotheism in a polytheistic cosmos: Technically, the narrative of the Bible does assume a cosmos in which multiple gods besides Yahweh exist, just that the narrative of the Bible centers around the worship of Yahweh and generally insists upon the sole worship of Yahweh. Indeed, there seems to be a whole council of divine beings who Yahweh presides over, and who gradually lose their stature as Yahweh condemns them. Other gods roam the land, receive worship, and even contend against Yahweh in struggles for power and/or territory. Adam and Eve eating the fruit of the tree of knowledge is explicitly stated as setting them on the path to joining the gods. This creates some ground for "Pagan" treatments of the Biblical landscape, not entirely unsuited to navigating our contemporary religious superstructure. It is also this exact henotheistic landscape that can, with little difficulty, reflect backwards towards the "pagan" cosmoses, often sites of divine rebellion.
Demonology: The Bible is full of demons, alongside its own distinct notion of the demonic. Granted the Apocrypha tend to have a lot more demonology going for them, but the Bible has a wide catalogue of demons that infest the popular imaginary to this day. Christian demonologists have of course frequently derived some of their demons from pagan gods that appeared in the Bible (for example Berith, Adrammelech, Astaroth, Beelzebub, to name just a few) and elsewhere. As Andrew Mark Henry (the Religion For Breakfast guy) noted recently, the demonic has its own way of conveying a sort of outer and/or inner shadow relative to the culture. To pronounce heresy in some ways vivifies that shadow, giving it form and content. The gods, even as demons, speak, even in the voices of demons, their cult, their divine content, and in this form do so in a subversive role.
For that particular point I would suggest a new video on the demonology of The Legend of Zelda. Yes, you heard that right.
Cosmic pessimism: This part may sound quite strange, but it's very easy to get a throughline of. Granted it's mostly relevant to Christianity, which as far as I can see really doesn't have the benefit of getting to argue with God that Jewish rabbinical tradition actually seems to have. But picture, for classical monotheism at least in "Western" terms, the throughline of a seemingly all-powerful singular deity, who is to be treated as the sole sovereign of the universe. That power, that intelligence, governs the whole of life and its course, and so is invariably responsible for its death. It is also possible to see a constant struggle of humanity with even the divine itself - a theme which can be found more often than you'd think in the Old Testament, but which is poorly appreciated, if at all, by Christianity at large. Whether it's Adam and Eve defying God and being exiled, arguably the story of the Tower of Babel whereby the tower itself is a struggle to connect humanity to the divine which is thwarted by God, Job demanding an explanation from God for all his turmoils before ultimately accepting God's word, or the story of Jacob wrestling with the angel or apparently God itself and being declared victorious by God itself and taking the name Israel as a result, there's actually quite a lot to work with that can furnish an admittedly rugged and darksome perspective on the universe. Not to mention exegesis around the "fall".
But all this is just what I can think of, and if anything a lot of it still assumes a counter-narrative assemblage. What Ocean has in mind to my mind seems altogether different, and the nature of that difference is in some ways the problem. Ocean thinks that the problem of the Biblical narrative is mostly that it was simply used to cultivate a supremacy narrative for Christianity, and I think that's a rather simplistic way to look at it, particularly when, if we're talking about supremacy, the proclamations of the sovereignty of a single god are right there, in the text. Even if it's about use, strictly, if you want to use it for that it's certainly not hard. But then the rest of Ocean's thread is essentially him talking about how witches and magicians invoked verses of the Psalms for example in their magic. But that's not actually in itself "Biblical insight on magic". That's Christians practicing their own variety of folk magic, in the name of the Christian God, probably centuries after the Bible was written. It's just saying that Christians have done magic with the Bible and that it's a part of history so you have to consider it as a pagan, never mind that it might not actually be relevant to your practice as a pagan, because reasons. I would have brought up the Greek Magical Papyri or The Eighth Book of Moses as better examples just because they actually seemed to involve invoking pagan gods like Horus or Helios alongside Jesus Chrestos, Michael, Gabriel, Raphael, and Iao Sabaoth in some spells while ostensibly still operating around very pagan ideas about religion and magic but hey, that's just me.