Numbers 21:4-7

And they journeyed from mount Hor by the way to the Red Sea, to compass the land of Edom: and the soul of the people was much discouraged because of the way. And the people spake against God, and against Moses, Wherefore have ye brought us up out of Egypt to die in the wilderness? for there is no bread, and there is no water; and our soul loatheth this light bread. And Jehovah sent fiery serpents among the people, and they bit the people; and much people of Israel died. 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.