Exodus 17 says God will "wipe out the remembrance of Amalek from under heaven." Two verses later it says the Lord will be at war with Amalek "from generation to generation." Which one is it?

This isn't about explaining away the hard parts of the Old Testament. It's about asking a better question than "did this literally happen," and asking instead, "why am I being told this story, and what kind of story is it." Once you see this pattern in Exodus 17, you start noticing it everywhere else, including in the conquest of Jericho.