Yes, but why did John the baptist use this term? He was obviously confused later on when he sent his disciples to ask Jesus a question about his messiahship. Possibly, Jesus' way of living was not sacrificial enough for John. For instance, some questioned Jesus as to why his disciples ate and drank while John's disciples fasted and prayed. It appears John's intructions from God or his parents, or from the community John came from in the desert saw in the coming Messiah something that is unlike Judas Maccabeus. Instead of a Militaristic Messiah they were looking for a "suffering servant" or a sacrificial messiah. What do we know of John's community or his commission? What made John use this term instead of "Lion of Judah" or "Son of David?" A little larer, Jesus speaking with the disciples on the road to Emmaus, indicated that the story of the Messiah's suffering was plainly told in the Hebrew Scriptures. Were there others besides John who knew this about the messiah? Is there some indication by the way John lived and preached that the Messiah would be a "lamb of God?" That his mission was not to deliver Israel from the Romans rather deliver humanity from their bondage of Sin. Were there people thinking in these terms? Your answers highlighting the sacrice of Issac, the function of the preist hood and the passover are excellent. Thank you for putting your thoughts out there. Peace