Thy God hath anointed thee— Christ is emphatically, The Anointed; Luke 4:18.; Acts 10:38. Kings, priests, and prophets, were anointed when they entered upon their several offices. Christ was anointed of the Father, solemnly appointed to be the prophet, priest, and king of his people; but it is the regal dignity which is here chiefly referred to, with which (as man) he was not fully invested till after his resurrection, and exaltation to his throne in heaven. Gladness, means such as is remarkable at the coronation of kings, or rather infinitely beyond it. Thy fellows, must mean either other prophets, priests, and kings, or the faithful in general, who also have an unction from the Holy One, and who are made kings and priests unto God. See 1 John 2:20.; Revelation 1:6.
Related Commentaries of Psalms 45:7
Psalms 45:7
7 Thou lovest righteousness, and hatest wickedness: therefore God, thy God, hath anointed thee with the oil of gladness above thy fellows.