NOTES for Gal 4:4

We will never be able to understand fully what miracle took place two thousand years ago. We can only name some aspects of this incomprehensible event. In the Nativity we are given an astounding revelation of God about Himself: it turns out that the One God has an Only Begotten Son, and this does not contradict the unity of God. But in addition, the Son, being "greater" than the whole world, enters and is contained within this world, coming into it as a human Infant. He is born into this world like all children, passing 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 time differs from time, since there is a "fullness of time": the moment when God's centuries-long care in educating the human person 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 continue listing and listing... But it is better simply to rejoice in this miracle and bring this joy to all people, who need joy so much.