Because, God knew him from the beginning that he will rebell against God. This is an example for our generation, that if you harden your heart towards God - He will hardened it more like a stone of heart. And, that's why there's so many atheist in our days.
There's no archeological evidence to suggest that the exodus actually happened (ie. Hebrew pottery adopting an Egyptian style), and scholars generally agree that there aught to be if it happened. That's not to say that it's impossible that it could have occurred, but the evidence suggests that it probably didn't.
However, there is evidence for an Egyptian colonisation of Canaan -the land that became Israel- during the time that the Hebrew people were beginning to emerge and the Jewish religion beginning to come about in its earliest form. I think it's quite likely that the story of Exodus was a myth created and passed down with the intention of expressing the feelings of the early Jews on the departure of the Egyptian, the freedom this gave them, and the fact that they then had their own lands. They no doubt believed that Yahweh was on their side, and probably wanted to tell a story which showed that more clearly.
I definitely don't think that the Exodus is historical fact, but I think that diminishing it to 'fiction' is far too simplistic, because the authors will have truly believed that there was some level of truth in the story; namely that God was on the side of the Jews and freed them from the oppression of the Egyptians.
(P.S sorry, I wasn't able to watch the video tonight, so what I'm saying might be irrelevant. If so, I'm sorry.)
Don't be. This is rather a unique view, of the Egyptians exiting and to me is more plausible than the reverse that the myth shows.
It is quite possible that some facts from the Hyksos expulsion were indeed incorporated in the myth to give pride to the Jews. Quite hard to tell from this far up in history. That is why I depend on the archeology that says it did not happen as written and I add the fact that I do not believe in miracles.