Exodus 4:3
The Lord said, "Throw it to the ground." So he threw it to the ground, and it became a snake, and Moses ran from it.
Exodus 4:17
You will also take in your hand this staff, with which you will do the signs."
Exodus 7:10-15
When Moses and Aaron went to Pharaoh, they did so, just as the Lord had commanded them -- Aaron threw down his staff before Pharaoh and his servants and it became a snake.
Amos 5:19
Disaster will be inescapable, as if a man ran from a lion only to meet a bear, then escaped into a house, leaned his hand against the wall, and was bitten by a poisonous snake.