Baptism is a sign and seal of the covenant of grace. In this covenant, God has promised us eternal life and guaranteed that promise in the blood of His Son. On our part, He requires faith and obedience. These conditions are most necessary if we are to keep covenant with God and even these conditions He graciously supplies. As baptism is the sign and seal of God’s covenant, it is also a sign and seal of new life in Christ Jesus. So God turns our attention to His Son in baptism because all of God’s promises are yes and amen in Him.