Numbers 21:6-7; Numbers 21:9
And the LORD sent fiery serpents among the people, and they bit the people; and much people of Israel died .
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.
And Moses made a serpent of brass, and put it upon a pole, and it came to pass, that if a serpent had bitten any man, when he beheld the serpent of brass, he lived .