29 The next day John saw Jesus coming toward him and said, “Look, the Lamb of God, who takes away the sin of the world! .... 36 When he saw Jesus passing by, he said, “Look, the Lamb of God!” (John 1:29, 36)

11 For the life of a creature is in the blood, and I have given it to you to make atonement for yourselves on the altar; it is the blood that makes atonement for one’s life. (Leviticus 17:11)

22 In fact, the law requires that nearly everything be cleansed with blood, and without the shedding of blood there is no forgiveness. (Hebrews 9:22)