According to a Jewish rabbi, 3 times; but I think 4. According to the rabbi #1 Ex 24. To get the Ten Commandments.
#2. I think the rabbi means this hard to catch 2nd trip up the mount in Ex 32:30-31 To get forgiveness for the calf incident. #3 Ex 34:4-6 where Moses goes up the Mount to get the 2nd set of commandments.
#4. In Deut 9:23-25 it says that Muoses fasted when they did not enter the promised land.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.