Sunday-in and Sunday-out, for at least 1,300 years the Church has sung various forms of “Lamb of God” before Holy Communion. Why do we do this? The answer is both simple and profound. When John the Baptist came “baptizing with water” (John 1:31), his ministry revealed Jesus as “the Lamb of God, who takes away the sin of the world” (John 1:29). Indeed, Jesus is “the Lord, the Redeemer of Israel,” “his Holy One,” (Is. 49:7) the incarnate Son of God, the Savior not only for Israel but also the “light for the nations” whose salvation reaches “to the end of the earth” (Is. 49:6). He glorified His God and Father by His atoning sacrifice upon the cross and resurrection from the dead. According to His promise, He delivers to us the benefits of His death and resurrection—the forgiveness of sins—each time the Gospel is proclaimed and the Sacraments are administered according to His command. Through the sacraments we are “called into the fellowship of his Son, Jesus Christ” (1 Cor. 1:9). Therefore, we “are not lacking in any gift” and can trust Him who promises to sustain us to the end, “guiltless in the day of our Lord Jesus Christ” (1 Cor. 1:7–8).