Why is Christ called the Lamb of God?

Christ being referred to as the Lamb of God emphasizes His role as our sacrificial atonement. In Revelation 5, John witnesses the Lamb standing as if it had been slain, underscoring His sacrifice on the cross. This imagery connects to the Old Testament sacrificial system, where lambs were offered for the sins of the people. Jesus, the Lamb of God, fulfilled this symbolism as the ultimate, perfect sacrifice, leading to the redemption of His people. His blood, shed for our sins, is what makes Him worthy to take the book from God's hand, as displayed in Revelation 5:9-10: 'For thou wast slain, and hast redeemed us to God by thy blood.'