Exodus 9:22

9:22 Then the Lord said to Moses, “Extend your hand toward the sky that there may be hail in all the land of Egypt, on people and on animals, and on everything that grows in the field in the land of Egypt.”

Exodus 14:27

14:27 So Moses extended his hand toward the sea, and the sea returned to its normal state when the sun began to rise. Now the Egyptians were fleeing before it, but the Lord overthrew the Egyptians in the middle of the sea.