Jesus is the Lamb of God who takes away the sin of the world
Matthew 26:26–29 (ASV 1901)
26And as they were eating, Jesus took bread, and blessed, and brake it; and he gave to the disciples, and said, Take, eat; this is my body. 27And he took a cup, and gave thanks, and gave to them, saying, Drink ye all of it; 28for this is my blood of the covenant, which is poured out for many unto remission of sins. 29But I say unto you, I shall not drink henceforth of this fruit of the vine, until that day when I drink it new with you in my Father’s kingdom.
John 1:29 (ASV 1901)
29On the morrow he seeth Jesus coming unto him, and saith, Behold, the Lamb of God, that taketh away the sin of the world!