Each opportunity was met with refusal
For those demanding, "If God exists, let him show himself," it doesn't get much more dramatic than the Red Sea parting.
The Creator and the God of Israel had made the headlines in Canaan! In the words of Rahab,
"We have heard how the LORD dried up the water of the Red Sea before you when you came out of Egypt.... When we heard of it, our hearts melted and no courage remained in any man any longer because of you; for the LORD your God, He is God in heaven above and on earth beneath" (Josh. 2:10-11).
In the words of the Gibeonites,
"Your servants have come from a very far country because of the fame of the LORD vour God; for we have heard the report of Him and all that He did in Egypt" (9.9; cf. Exod. 15:14-17; Deut. 2:25).
Just as a pagan Nineveh repented at the sight and message of the beached (and bleached!) prophet Jonah, the Canaanites also could have repented: unless, of course, they were too far gone morally and spiritually.
In the New Testament, Jesus asserts that without a willing heart, a person won't turn to God even if someone rises from the dead (Luke 16:31).
The repeated, visible pounding of Egypt's gods could have prompted the Canaanites to turn to the one true God, given they had a "heart condition" like Rahab's. Even Israel's sevenfold march around Jericho exhibited a formal opportunity for its king, soldiers, and priests to relent.
The Hebrew word naqap ("circle, march around" in Josh. 6:3) involves various ceremonial aspects, including rams' horns, sacred procession, and shouting (cf. 2 Sam. 6:15-16). The word is found in Psalm 48: "Walk about Zion and go around her; count her towers; consider her ramparts" (vv. 12-13; also 2 Kings 6:14). The word suggests the idea of conducting an inspection. In the case of Jericho, the inspection was conducted to see if the city would open its gates. The city, however, refused to do so.
Each time the Israelites circled the city meant an opportunity for Jericho to evade the ban; sadly, each opportunity was met with Jericho's refusal to relent and acknowledge Yah weh's rule.
Paul Copan















