Numbers 21:5-8

The people spoke against God and Moses: “Why did you bring us up from Egypt to kill us in the desert, where there is no food or water. And we detest this miserable bread!” So the LORD sent poisonous snakes among the people and they bit the people. Many of the Israelites died. The people went to Moses and said, “We’ve sinned, for we spoke against the LORD and you. Pray to the LORD so that he will send the snakes away from us.” So Moses prayed for the people. The LORD said to Moses, “Make a poisonous snake and place it on a pole. Whoever is bitten can look at it and live.”