John Gill's Exposition of the Whole Bible
Psalms 89:19
Then thou spakest in vision to thy Holy One,.... Samuel the prophet, that holy man of God, to whom the Lord spoke in vision, or by a spirit of prophecy, concerning David, the choice and exaltation of him to the kingdom, and his unction for it, 1 Samuel 16:1. The Vulgate Latin version reads it "to thy Holy Ones": and so the Targum, with which agree the Septuagint and Arabic versions, which render it "thy sons"; and the Syriac version "his righteous ones", and so takes in Nathan also, to whom the Lord spake in a vision, by night, concerning the settlement and perpetuity of the kingdom in David's family, 2 Samuel 7:4, c. Aben Ezra interprets it of the singers, Heman, Ethan, and others and Jarchi of Gad and Nathan: but the whole is rather to be understood of David's son, the Messiah; and it may be rendered "concerning thy Holy One" i as he is called, Psalms 16:10, concerning whom in vision, that is, in prophecy, see Isaiah 1:1. The Lord said, by the mouth of his holy prophets, from the beginning of the world, the following things:
and saidst, I have laid help upon one that is mighty; this "mighty" One is the Messiah, the mighty God, the mighty Man, the mighty Mediator and Redeemer; who was mighty to save to the uttermost, and was every way fit for and equal to the work of a Redeemer; for which reason the Lord "laid help" upon him, not for himself; for this is not to be understood of help promised or given him as man and Mediator: this is after spoken of, Psalms 89:21, but for others; and so the Targum adds, "for my people": laying it on him is no other than ordering or enjoining him, to which he agreed, to help his people out of that miserable condition they were fallen into, through Adam's transgression, and their own sins, out of which they could not help themselves: the work assigned to Christ, and devolved on him in council and covenant, was to help them out of this estate by price and power; and to help them on in their way to heaven, through all difficulties, trials, and temptations; and to help them to heaven itself, and introduce them there: and being thus laid upon him, according to his Father's will and purpose, and with his own consent, it was found in him, and exercised by him, Hosea 13:9.
I have exalted one chosen out of the people; the same as before, the Messiah, God's elect, his chosen One, Isaiah 42:1 "chosen" to be the head of the church, to be the Mediator between God and man, and to be the Saviour and Redeemer of lost sinners; to be the foundation and corner stone in the spiritual building, and to be the Judge of quick and dead: and he was "chosen out of the people"; out of the vast number of the individuals of human nature God determined to create, there was a certain number which he selected for himself, for his own glory, and to be eternally happy with him; and out of these he singled one "individuum" of human nature, to be united to the eternal Word, the second Person in the Trinity; and which may be truly said to be the "chiefest among", or, as the Septuagint version has it, "chosen out of ten thousand", Song of Solomon 5:10, this the Lord "exalted" to the grace of union to the Son of God, whereby it became higher than angels and men, and to have a more excellent name than either of them, it bearing the name of him to whom it is united, Hebrews 1:4, and he has exalted him to the offices of Prophet, Priest, and King, for which he is
anointed above his fellows; and he has also, having done his work, highly exalted him at his right hand; angels, principalities, and powers, being subject to him.
i לחסידך "de pio tuo", Cocceius; "de sancto tuo", Gejerus.