Heaven and earth rejoice this night because the glory of the holy Triune God is manifested in the human birth of “our great God and Savior Jesus Christ” (Titus 2:13).

The Festival of the Nativity of our Lord is the traditional way of saying Christmas Day, on which Christians celebrate the birth of our Savior Jesus.

While Christmas focuses on the incarnation of our Lord — God becoming flesh — the season of Epiphany emphasizes the manifestation or self-revelation of God in that same flesh of Christ.