Numbers 21:4-9
New King James Version (NKJV)

The Bronze Serpent
4 Then
they journeyed from Mount Hor by the Way of the Red Sea, to go around the land of Edom; and the
soul of the people became very discouraged on the way. 5 And the
people spoke against God and against Moses: “Why have you brought us up out of Egypt to die in
the wilderness? For there is no food and no water, and our soul loathes this
worthless bread.” 6 So the Lord sent fiery serpents among the people, and they bit the
people; and many of the 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 you; pray to the Lord that He take away the
serpents from us.” So Moses prayed for the people.

8 Then the Lord said to Moses, “Make a
fiery serpent, and set it on a pole; and it shall be that everyone who is
bitten, when he looks at it, shall live.” 9 So Moses
made a bronze serpent, and put it on a pole; and so it was, if a serpent had bitten anyone, when
he looked at the bronze serpent, he lived.