Cross reference
Exodus 4:3
3 And he said, Cast in on the ground. And he cast it on the ground, and it became a serpent; and Moses fled from before it.
Exodus 4:17
17 And thou shalt take in thy hand this rod, wherewith thou shalt do the signs.
Exodus 7:10-15
10 And Moses and Aaron went in unto Pharaoh, and they did so, as Jehovah had commanded: and Aaron cast down his rod before Pharaoh and before his servants, and it became a serpent.
11 Then Pharaoh also called for the wise men and the sorcerers: and they also, the magicians of Egypt, did in like manner with their enchantments.
12 For they cast down every man his rod, and they became serpents: but Aaron's rod swallowed up their rods.
13 And Pharaoh's heart was hardened, and he hearkened not unto them; as Jehovah had spoken.
14 And Jehovah said unto Moses, Pharaoh's heart is stubborn, he refuseth to let the people go.
15 Get thee unto Pharaoh in the morning; lo, he goeth out unto the water; and thou shalt stand by the river's brink to meet him; and the rod which was turned to a serpent shalt thou take in thy hand.
Amos 5:19
19 As if a man did flee from a lion, and a bear met him; or went into the house and leaned his hand on the wall, and a serpent bit him.