In the fullness of time God sent into the world his Son born of a woman. The Son of God became the Son of the Virgin. Here is the assurance and the beginning of salvation, the guarantee and source of eternal life. This is the reason for both, those on earth and those in heaven, to rejoice – the mystery of Godmanhood, the glory of the divine Incarnation. The kingdom of God then began and was truly revealed in history itself; in the meekness and humility of a simple life. The star of the eternal covenant stopped and shone over the cavern in Bethlehem. The humiliation of the cavern testifies that the kingdom then revealed is not of this world.
~Georges Florovsky, The Year of Our Lord, Editorial in Saint Vladimir’s Seminary Quarterly, Vol. 1, No. 2, Winter, 1952