Jewish proof of God

The Mormons claim that they can prove their own religion is true. Of course, they plant all the evidence. What's to stop the same happening here? Firstly, there isn't even a record in Egypt of a mass exodus of slaves. They slo COULDN'T have escaped because at the time there were no gaps in Egypt's borders large enough for them to get out without being spotted by one of its many watchtowers. At best, there were maybe 50-60 slaves in total that escaped. Secondly, what's to stop me from making up history? Loads of people have done it. I can write anything I want into history, as long as there's no-one around to disprove it. So - a bunch of Jews decide one day that they've seen God on a hill. There probably weren't 1,000,000, but that's besides the point. They start spreading the word. Believers decide that since the three people spreading the rumours say there were hundreds, they must have been there aswell. Soon, the hundreds grows to thousands, and suddenly the story changes from there were hundreds to there were thousands and so on until we make our way up to present day where we get the myth that there were over a million. Thirdly, thousands each year claim enlightenment. For them to be right, this theory must be wrong, and vice versa. Finally, above all else, proof that it hasn't changed through generations, pls?