Answer: It is impossible to count that, and this is why the escape takes place suddenly, in a hurry. A person does not know when he will come out of exile. Suppose the 400 years of exile are to end today at 13:30, but you can’t know that. Don’t you see that according to the story, the escape is sudden? You are told only what you must take with you: the components that make up your spiritual vessel so that later you will be able to rise above it.
According to the story, after we come out of Egypt, we leave nothing behind. I take all the gold, all the sheep and the cattle, all the property, and leave behind me an empty, destroyed country. I destroy to the ground the country that once flourished, big and prosperous with beautiful cities, and I leave.
Of course, I leave for a better life, and there is nothing to lose. There is no reason to stay in Egypt where there is not even water to drink because everything has turned to blood, and everything is dead.
This is how a person sees the corporeal world that he leaves. In fact, the beautiful palaces are still there and so are all the good things, everything is flourishing, but in my eyes it looks like a destroyed land in the dark. This is how it is perceived in my new discernments that oblige me to disrespect all the luxury and see it as trash and to want to escape from it.
However, if I looked at everything through the eyes of a slave, I would see the rich land and think that that there is no need to escape. After all, the land of Egypt is surrounded by a desert.
But suddenly I decide that staying there is the worst thing, and there is nothing worse than that. It isn’t just a desert, but a place of awful destruction and lowliness. It is all in the eyes of the beholder.
From the 3rd part of the Daily Kabbalah Lesson 4/18/2012, TES