Chapter 4 — Part I — Article II (Of the Son of God)
Section 129. Q. How are we to understand the names Jesus Christ, the Son of God? A. Son of God is the name of the second Person of the Holy Trinity in respect of his Godhead: This same Son of God was called Jesus, when he was conceived and born on earth as man; Christ is the name given him by the Prophets, while they were as yet expecting his advent upon earth.