https://www.youtube.com/embed/24JiAr2BMBA?list=PLT70zxsi10M8he78ssuNmHkQWiAUB4wTk
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 the Lord said unto Moses, Make a fiery serpent, and set it on a pole: and it shall come to pass, that every one that is bitten, when he looketh upon it, shall live. 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.
Numbers 21:7-9