Thou hast made him most blessed, Heb. thou hast set (or, made, as this verb is used, Psalms 40:5, Psalms 89:42 91:9 Lamentations 3:45) him blessings; i.e. either,
1. The author or instrument of manifold blessings to the world, and especially to thy people; which David was in a good measure, but Christ much more truly and eminently. Although this may not seem very suitable to the context, which only speaks of the blessing conferred by God upon this king, and not at all of the blessings flowing from him to others. Or,
2. The great example of all blessings, whom the Israelites in all ages shall propound to themselves, in all their forms and pronunciations of blessings. They shall say, God make thee as blessed as this king, either David or the Messias; compare Genesis 12:2, Genesis 48:20; or rather most blessed, as we translate it; the abstract form and the plural number being here used emphatically, as they commonly are, as Ezekiel 34:26 Psalms 5:10, Psalms 19:10 35:6, to note a man in whom all sorts of blessings are united and met together, filled with blessings, and as it were a man of blessings, made up altogether of blessings, as Christ upon a like reason was called a man of sorrows, Isaiah 53:3. And possibly the word man may be understood here, as it is in many other places, as I have showed before, and the place rendered thus, thou hast made him a man of blessings. Forever; of which See Poole on "Psalms 21:4". With thy countenance, to wit, smiling upon him, as it must necessarily be understood from the foregoing words, i.e. by thy grace and favour manifested and imparted to his soul, and by the effects of it in saving him from all his enemies and calamities.