NOTES for Gal 4:4

We will never understand fully what miracle took place two thousand years ago. We can only name some aspects of this incomprehensible event. In the Nativity, an astounding revelation of God about Himself is given to us: it turns out that the One God has an Only-Begotten Son, and this does not contradict the unity of God. But beyond this, the Son, being "greater" than the whole world, enters and is contained within this world, coming into it as a human Child. He is born into this world like all children, having passed through all the stages of development in the womb, and this is the One in Whom all the fullness of the Godhead dwells bodily. He receives His human body from the Virgin, who preserved her virginity even in the Nativity.

Further, it turns out that not all time is the same, since there exists a "fullness of time": that moment when God's age-old care in educating humanity leads to the appearance, in this world lying in evil, of such a young Virgin who was able to receive into herself the whole fullness of God's grace... One can keep listing and listing further... But it is better simply to rejoice in this miracle and bring this joy to all people, who so need joy.