Exodus 8:5

8:5 The Lord spoke to Moses, “Tell Aaron, ‘Extend your hand with your staff over the rivers, over the canals, and over the ponds, and bring the frogs up over the land of Egypt.’”

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 10:12

10:12 The Lord said to Moses, “Extend your hand over the land of Egypt for the locusts, that they may come up over the land of Egypt and eat everything that grows in the ground, everything that the hail has left.”

Exodus 13:9

13:9 It will be a sign for you on your hand and a memorial on your forehead, so that the law of the Lord may be in your mouth, for with a mighty hand the Lord brought you out of Egypt.