Heaven and earth rejoice on this night, because the glory of the Holy Trinity is manifested in the human birth of “our great God and Savior Jesus Christ” (Titus 2:13), through whom the Father’s grace and mercy permeate the world. Death’s silence is nullified by this “good news of great joy that will be for all the people” (Luke 2:10). And all we who have gone astray like lost and wandering sheep, who have “walked in darkness” of doubt, fear and sinful unbelief, behold “a great light” in the nativity of Jesus Christ (Is. 9:2). In Him, “the grace of God has appeared” (Titus 2:11). For this child of Mary who is born for us, this dear Son of God who is given to us, bears the burden of our sin and death in His own body on the cross. By initiating and fulfilling His earthly journey from nativity to crucifixion, Christ establishes a government of peace, “with justice and with righteousness,” which shall have no end; not by any work of man, but “the zeal of the Lord of hosts will do this” (Is. 9:7). That is why we sing.