Rabbi Eliezer preserves a stunning exchange between God and Moses at the shore of the Red Sea. The Israelites were trapped — the sea raging before them, the Egyptian army closing behind — and Moses did what any righteous person would do: he prayed. He prayed at length, pouring out his heart to God.
And God interrupted him. "Moses, My children are in trouble. The sea is raging and the foe is pursuing — and you stand and prolong your prayers?" The rebuke is extraordinary. God was telling Moses that this was not the moment for extended prayer. This was the moment for action.
Rabbi Eliezer built this into a general principle: there is a time to prolong prayer and a time to shorten it. Both are valid. Both are necessary. Wisdom lies in knowing which the moment demands.
When Miriam was struck with leprosy, Moses prayed with devastating brevity: "God, I pray You, heal her" (Numbers 12:13). Five Hebrew words. That was a time to shorten — the urgency was immediate, and a brief cry from the heart was sufficient.
But when Israel sinned with the Golden Calf, Moses "fell down before the Lord as at first, forty days and forty nights" (Devarim 9:18). That was a time to prolong — the sin was catastrophic, and only extended, sustained intercession could avert the decree of destruction.
At the Red Sea, the situation demanded speed. Children were crying, the army was approaching, and every second of delay brought the Egyptians closer. God needed Moses to stop praying and start acting — to raise his staff and split the sea. Even prayer, the supreme weapon of Israel, must sometimes yield to the urgency of the moment.