Numbers 21:6-8

American Standard Version

⁶ And Jehovah sent fiery serpents among the people, and they bit the people; and much people of Israel died. ⁷ And the people came to Moses, and said, We have sinned, because we have spoken against Jehovah, and against thee; pray unto Jehovah, that he take away the serpents from us. And Moses prayed for the people. ⁸ And Jehovah said unto Moses, Make thee a fiery serpent, and set it upon a standard: and it shall come to pass, that every one that is bitten, when he seeth it, shall live.