Exodus 8:5; Exodus 8:6; Exodus 8:16

5 Then the LORD said to Moses, "Say to Aaron, 'Stretch out your hand with your staff over the rivers, over the streams and over the pools, and make frogs come up on the land of Egypt.' "

6 So Aaron stretched out his hand over the waters of Egypt, and the frogs came up and covered the land of Egypt.

16 Then the LORD said to Moses, "Say to Aaron, 'Stretch out your staff and strike the dust of the earth, that it may become gnats through all the land of Egypt.' "