Hashem says to Moshe, “Why are you screaming, tell the Jewish nation to go.”
The Jewish nation gets to the shore of the Yam Suf and Mitzarayim is chasing behind them to kill them. Moshe cries out. Hashem is telling him two things: 1) why are you screaming? You are not sure what to do? Ok, so ask where should we go? To which I already told you. 2) The Gemara, when discussing the laws of the asheira tree, if it says something is going to get burned, it is as if it is already burnt. If you are holding a lulav from such a tree, you can shake it from today till tomorrow, but according to Halachah, you did nothing because this lulav does not exist. Hashem is telling Moshe, “this is my department, to work out nature, not your problem, I said go, for you that water is not there, it looks scary with all the waves at the sea, but don’t worry, they don’t exist.”
Good Shabbos to all,
Zevi