To the chief Musician, [a Psalm] of David. This is the same with that in 2Sa 22:1, with some variations, omissions, and alterations:the servant of the Lord; not only by creation, nor merely by regeneration, but by office, as king of Israel, being put into it by the Lord, and acting in it in submission and obedience to him; just as the apostles under the New Testament, on account of their office, so style themselves in their epistles:who spake unto the Lord the words of this song; that is, who delivered and sung this song in so many express words, in public, before all the congregation of Israel, to the honour and glory of God:in the day [that] the Lord delivered him from the hand of all his enemies, and from the hand of Saul, Not that this psalm was composed and sung the selfsame day that David was delivered from Saul, and set upon the throne; for it seems to have been written in his old age, at the close of his days; for immediately after it, in the second book of Samuel, it follows, "now these be the last words of David", 2Sa 23:1: but the sense is, that whereas David had many enemies, and particularly Saul, who was his greatest enemy, the Lord delivered him from them all, and especially from him, from him first, and then from all the rest; which when he reflected upon in his last days, he sat down and wrote this psalm, and then sung it in public, having delivered it into the hands of the chief musician for that purpose.
There are two passages cited out of it in the New Testament, and applied to Christ; Ps 18:2, in Heb 2:13, and Ps 18:49 in Ro 15:9; and there are many things in it that very well agree with him; he is eminently the "servant" of the Lord as Mediator; he was encompassed with the snares and sorrows of death and hell, and with the floods of ungodly men, when in the garden and on the cross God was his helper and deliverer, as man; and he was victorious over all enemies, sin, Satan, the world, death and hell; as the subject of this psalm is all along represented: and to Christ it does most properly belong to be the head of the Heathen, whose voluntary subjects the Gentiles are said to be, Ps 18:43; and which is expressed in much the same language as the like things are in Isa 55:4; which is a clear and undoubted prophecy of the Messiah; to which may be added, that the Lord's Anointed, the King Messiah, and who is also called David, is expressly mentioned in Ps 18:50; and which is applied to the Messiah by the Jews as Ps 18:32 is paraphrased of him by the Targum on it;and he said; the following words: Echa Rabbati, fol.
50. 2. & Midrash Tillim in Tzeror Hammor, fol. 47. 3.Ver. 1. I will love thee, O Lord, my strength. These words are not in twenty second chapter of Second Samuel: the psalm there begins with Ps 18:2.
The psalmist here expresses his love to the Lord, and his continuance in it; that Jehovah the Father was, is, and ever will be the object of Christ's love, is certain; and which has appeared by his readiness in the council and covenant of grace to do his will; by his coming down from heaven to earth for that purpose; by his delight in it, it being his meat and drink to do it; and by his sufferings and death, which were in compliance with, and obedience to it, Joh 14:31; and as in David, so in all regenerate ones, there is love to God; Jehovah is loved by them in all his persons; Jehovah the Father is loved, and to be loved, for the perfections of his nature, because of the works of his hands, of creation and providence; and particularly because of his works of special grace and goodness, and especially because of his love wherewith he has loved his people, 1Jo 4:19.
Jehovah the Son is loved, and to be loved, above all creatures and things whatever, sincerely and heartily, fervently and constantly; because of the loveliness of his person, the love of his heart, and his works of grace and redemption; all of him is lovely; and he is to be loved, and is loved, in his person, offices, relations, people, word, and ordinances: Jehovah the Spirit is loved, and to be loved, because of his person and perfections, and operations of grace; as a sanctifier, comforter, the spirit of adoption, the earnest and pledge of eternal glory.