What does it mean for Christ to be the Lamb of God?

The title 'Lamb of God' signifies Jesus as the prophesied one who would fulfill the sacrificial system established in the Old Testament. John the Baptist's proclamation (John 1:29) indicates Jesus' role as the ultimate sacrifice whose death and resurrection redeem humanity from sin. This references the sacrificial lambs used in the Temple, which were merely shadows of the true Lamb, Jesus, who alone satisfies God's justice by taking upon Himself the sin of the world. His sacrifice brings reconciliation between God and man, thus offering eternal life to those who believe in Him.