The Apostles' Creed emphasizes the fact that the only-begotten Son of the Father is the same Jesus Christ as Son of man, "who was conceived by the Holy Spirit, and born of the Virgin Mary".

The Nicene Constantinopolitan Creed expresses it in slightly different words: For us men and for our salvation he came down from heaven; by the power of the Holy Spirit he was born of the Virgin Mary, and became man".

The Creeds express the Church's faith in a concise manner, but thanks to this very conciseness they stress the more essential truths. In Hebrews God himself speaking "through his Son" becomes the subject of the revelation. He himself speaks of himself.

The New Testament, and especially the Gospels, speak of Jesus Christ as Son of God in the strict and full sense. He is "begotten, not made", he is of the same Being with the Father".

As significant as are the words of Jesus, "No one knows the Father except the Son and any one to whom the Son chooses to reveal him" (Mt 11:27), so likewise are the other words "No one knows the Son except the Father" (Mt 11:27). Indeed it is the Father who reveals the Son.

The truth about Jesus Christ, Son of God, belongs to the very essence of the Trinitarian revelation. In it and through it God reveals himself as Unity of the inscrutable Trinity, of the Father, Son and Holy Spirit.

Thus the ultimate source of the testimony which the Gospels (and the whole of the New Testament) give of Jesus Christ as Son of God, is the Father himself, the Father who knows the Son and himself in the Son.

Jesus, in revealing the Father, shares with us in a certain way the knowledge which the Father has of himself in his eternal, only-begotten Son. By means of this eternal son-ship God is eternally Father.