On this Feast of Theophany, a description by Karl Barth of just what happened in the incarnation, and thus just what was revealed.
He did not cease to be the eternal Word of the eternal Father, Himself the one true God. But as this one true God He became flesh without reservation or diminution. He became man, true and actual man, man as he may be tempted and is tempted, man as he is subject to death and does actually die, man not only in his limitation but in the misery which is the consequence of his sin, man like us. This is how God is God–as the One who is free to do this and does it for His own sake, to put into effect His own almighty mercy, and therefore for our sake, who are in need of His mercy. The divine mercy, and in proof of it the inconceivably high and wonderful act of God, is that He becomes and is as we are. [CD IV/1, p. 418]
It is not paradoxical and absurd that God becomes man. It does not contradict the concept of God. It fulfils it. It reveals the glory of God. [p. 419]