Numbers 21:6-8

King James Version

⁶ And the Lord sent fiery serpents among the people, and they bit the people; and much people of Israel died.

⁷ Therefore the people came to Moses, and said, We have sinned, for we have spoken against the Lord, and against thee; pray unto the Lord, that he take away the serpents from us. And Moses prayed for the people.

⁸ And the Lord said unto Moses, Make thee a fiery serpent, and set it upon a pole: and it shall come to pass, that every one that is bitten, when he looketh upon it, shall live.