Numbers 21:8-9

New Revised Standard Version Catholic Edition

⁸ And the Lord said to Moses, “Make a poisonous^[a] serpent, and set it on a pole; and everyone who is bitten shall look at it and live.” ⁹ So Moses made a serpent of bronze, and put it upon a pole; and whenever a serpent bit someone, that person would look at the serpent of bronze and live.