Leviticus 16:21-22

21Aaron should lay both his hands on the head of the live goat and confess over it all the iniquities of Bnei-Yisrael and all their transgressions, all their sins. He should place them on the head of the goat and send it away into the wilderness by the hand of a man who is in readiness.

22The goat will carry all their iniquities by itself into a solitary land and he is to leave the goat in the wilderness.