Gloria in Excelsis Deo!

Christ is Born!

…the whole body of the faithful confess that they believe in God the Father Almighty, and in Jesus Christ, His only Son, our Lord, who was born of the Holy Spirit and the Virgin Mary. By which three statements the devices of almost all heretics are overthrown. For not only is God believed to be both Almighty and the Father, but the Son is shown to be co-eternal with Him, differing in nothing from the Father because He is God from God, Almighty from Almighty, and being born from the Eternal one is co-eternal with Him; not later in point of time, not lower in power, not unlike in glory, not divided in essence: but at the same time the only begotten of the eternal Father was born eternal of the Holy Spirit and the Virgin Mary. And this nativity which took place in time took nothing from, and added nothing to that divine and eternal birth, but expended itself wholly on the restoration of man who had been deceived: in order that he might both vanquish death and overthrow by his strength, the Devil who possessed the power of death. For we should not now be able to overcome the author of sin and death unless He took our nature on Him and made it His own, whom neither sin could pollute nor death retain. Doubtless then, He was conceived of the Holy Spirit within the womb of His Virgin Mother, who brought Him forth without the loss of her virginity, even as she conceived Him without its loss.

(Pope St. Leo the Great, Letter 28 (aka “The Tome of Leo“)