Behold the Lamb of God prayer : The words of the Lamb of God prayer however, come most directly from John the Baptist. John is the first person to refer to Jesus as “Lamb of God. “ (Jn1:29, 36) When he first saw Jesus during his baptism ministry at the Jordan, he cries out “Behold, the Lamb of God, who takes away the sin of the world. “ Jesus was the lamb that was led to the slaughter. Jesus is the one whose sacrifice made many righteous. We thus call Jesus “Lamb of God” and say to him that through his death, “You take away the sins of the world. “