Psalms 21:3 - Joseph Benson’s Commentary on the Old and New Testaments

Thou preventest him Or, didst prevent him, namely, David; crowning him with manifold blessings, both more and sooner than he desired or expected, surprising him with the gift of the kingdom, and with many happy successes. With the blessings of goodness That is, with excellent blessings, or with abundance of good. Applying this to Christ, we must say, The Son of God could not be more ready to ask for the blessings of the divine goodness than the Father was to give them, and his disposition is the same toward all his adopted sons. By the crown of pure gold, may be meant, in general, an illustrious crown, which is here represented as being set upon our Lord's head at his exaltation into heaven, in token of his being then advanced to this chief exercise of his regal authority. Thus he is said, Psalms 8:5, to be crowned with glory and honour; and St. John says, with respect to his deified humanity, in which he was made King of kings, and Lord of lords, that on his head were many crowns, Revelation 19:12; Revelation 19:16.