I almost feel bad for those ancient Hebrews. They were just trying to understand their world with very very imperfect tools to do so.
They “knew” that every tribe had its own protection god and they knew that they were different from the tribes around them. So they built a narrative to explain the facts of their existence. “We are different than our neighbors, therefore we must have came from some places else. Egypt is some place else”. “Other tribes eat pork and we don’t. It must be because our protective god doesn’t like it. How did he tell us? Well there must have been some time when he told one of us.” They kept on reasoning backwards, trying to find the effect from the causes.
I feel a lot less bad for people in modern times who take these bronze age ideas seriously.