All of the plagues in Egypt happened through open, instantaneous miracles; water turned into blood, dust into lice, soot into boils, etc. When splitting the sea however, G-d does so with a strong east wind that blew through the night. When compared to the other plagues, the splitting of the sea was arguably the most phenomenal. Why might G-d have added the “natural” component of causing the wind to blow through the night instead of performing a more overt and open miracle?
In the beginning of this week’s portion, the Torah states that G-d did not lead the Jewish people on the most direct path out of Egypt, out of concern that if they are forced to fight a war they may want to return to Egypt.
If the concern is that the Jewish people would rather return to Egypt than fight a war, what difference does it make whether the return is easy or more difficult?