" By the time of the Mosaic covenant, the peace offering (Lev 17:11ff.) was the divinely prescribed means of maintaining a harmonious relationship between God and his covenant people. The sin offering (Lev 4) dealt with sin as a barrier between the worshipers and God. This sin offering was a slaughtered bull, lamb, or goat with which the worshiper had identified himself by laying his hands on its head. When the blood of the victim, signifying its life (Lev 17:11), was daubed on the horns of the altar, symbolizing the presence of God, God and the worshipers were united in a renewed relationship. "

― D.A. Carson , Worship by the Book