So the LORD said to him, "What is that in your hand?" He said, "A rod."
Exodus 4:2
Surrounding context
4:1 Then Moses answered and said, "But suppose they will not believe me or listen to my voice; suppose they say, "The LORD has not appeared to you."'
4:2 So the LORD said to him, "What is that in your hand?" He said, "A rod."
4:3 And He said, "Cast it on the ground." So he cast it on the ground, and it became a serpent; and Moses fled from it.