R. Nathan says in the name of Abba Yossi Hamechuzi: ("Why do you cry out to Me?") Have I not had it written (Numbers 12:7) "In all of My house he (Moses) is trusted"? You (Moses) are in My dominion and the sea is in My dominion, and I have appointed you a keeper over it. (Therefore, [Exodus 14:16] "Raise your staff, etc.")