Son of God
   The plural, "sons of God," is used (Gen. 6:2, 4) to denote the
   pious descendants of Seth. In Job 1:6; 38:7 this name is applied
   to the angels. Hosea uses the phrase (1:10) to designate the
   gracious relation in which men stand to God.
   
     In the New Testament this phrase frequently denotes the
   relation into which we are brought to God by adoption (Rom.
   8:14, 19; 2 Cor. 6:18; Gal. 4:5, 6; Phil. 2:15; 1 John 3:1, 2).
   It occurs thirty-seven times in the New Testament as the
   distinctive title of our Saviour. He does not bear this title in
   consequence of his miraculous birth, nor of his incarnation, his
   resurrection, and exaltation to the Father's right hand. This is
   a title of nature and not of office. The sonship of Christ
   denotes his equality with the Father. To call Christ the Son of
   God is to assert his true and proper divinity. The second Person
   of the Trinity, because of his eternal relation to the first
   Person, is the Son of God. He is the Son of God as to his divine
   nature, while as to his human nature he is the Son of David
   (Rom. 1:3, 4. Comp. Gal. 4:4; John 1:1-14; 5:18-25; 10:30-38,
   which prove that Christ was the Son of God before his
   incarnation, and that his claim to this title is a claim of
   equality with God).
   
     When used with reference to creatures, whether men or angels,
   this word is always in the plural. In the singular it is always
   used of the second Person of the Trinity, with the single
   exception of Luke 3:38, where it is used of Adam.