(4) I have given him . . .--Better, I gave, the words referring primarily to the historic David (Comp. Psalm 78:70-71), though realised fully only in Him who was the "faithful and true witness" (John 18:37; Revelation 1:5; Revelation 3:14), the "captain" or "leader" of our salvation (Hebrews 2:10).

Verse 4. - Behold, I have given him for a witness. By ordinary rules of grammar, the pronoun "him" should refer to David; and so the passage is understood by Gesenius, Maurer, Hitzig, Ewald, Knobel, Delitzsch, and Mr. Cheyne. But, as Isaiah frequently sets aside ordinary grammatical rules, and as the position to the person here spoken of seems too high for the historical David, a large number of commentators, including Vitringa, Michaelis, Dathe, Rosenmuller, Umbreit, and Dr. Kay, consider that the Messiah is intended. It is certainly difficult to see how the historical David could be, at this time and in the future, a "leader and commander to the peoples" who were about to flock into the Messianic kingdom. A witness... a leader and commander. Christ was all these. He "came to bear witness to the truth" (John 18:37), and "before Pilate witnessed a good confession" (1 Timothy 6:13). He "feeds and leads" his people (Revelation 7:17), and is the "Commander" under whose banner they serve (2 Timothy 2:3, 4). What he is to his people, he is also of the "peoples" generally; for they have been called into his kingdom, People... people; rather, peoples.

55:1-5 All are welcome to the blessings of salvation, to whom those blessings are welcome. In Christ there is enough for all, and enough for each. Those satisfied with the world, that see no need of Christ, do not thirst. They are in no uneasiness about their souls: but where God gives grace, he gives a thirst after it; and where he has given a thirst after it, he will give it. Come to Christ, for he is the Fountain opened, he is the Rock smitten. Come to holy ordinances, to the streams that make glad the city of our God. Come to the healing waters, come to the living waters, Re 22:17. Our Saviour referred to this, Joh 7:37. Come, and buy; make it your own by application of the grace of the gospel to yourselves. Come, and eat; make it still more your own, and enjoy it. The world comes short of our expectations; we promise ourselves, at least, water in it, and we are disappointed; but Christ outdoes our expectations. We come to him, and we find wine and milk. The gifts offered to us are such as no price can be set upon. The things offered are already paid for; for Christ purchased them at the full price of his own blood, 1Pe 1:19. Our wants are beyond number, and we have nothing to supply them; if Christ and heaven are ours, we see ourselves for ever indebted to free grace. Hearken diligently; let the proud heart stoop; not only come, but accept God's offers. All the wealth and pleasure in the world, will not yield solid comfort and content to the soul. They do not satisfy even the appetites of the body; for all is vanity and vexation. Let the disappointments we meet with in the world, help to drive us to Christ, and to seek for satisfaction in him only. Then, and not before, we shall find rest for our souls. Hear, and your soul shall live. On what easy terms is happiness offered us! By the sure mercies of David, we are to understand the Messiah. All his mercies are covenant mercies; they are purchased by him, they are promised in him, and out of his hand they are dispensed to us. We know not how to find the way to the waters, but Christ is given to be a Leader, a Commander, to show us what to do, and enable us to do it. Our business is to obey him, and follow him. And there is no coming to the Father but by him. He is the Holy One of Israel, true to his promises; and he has promised to glorify Christ, by giving him the heathen for his inheritance.Behold, I have given him for a witness to the people,.... That is, the Messiah, as Aben Ezra, Kimchi, and Ben Melech rightly interpret it. This respects an act past in eternity, in God's eternal purposes and decrees, when he appointed Christ to the office of a Mediator; and this was an act of his grace, a free gift of his, flowing from his love to his people, both Jews and Gentiles, even all his elect, to whom Christ is a "witness", both of his father and of himself: of his father, of his good will to men, in forming the scheme of their salvation; of his love to sinners, in the mission of him; of his justice and holiness, which appear in his being the propitiation for sin; of his truth in his promises; of his whole mind and will, with respect to doctrine and worship: he is a witness of himself; of his deity and perfections; of his divine and eternal sonship; of his existence before his incarnation; of his Messiahship; of the end of his coming into the world; of his sufferings, death, and resurrection; of his second coming; and of the several characters he bears: he is a witness of the covenant itself, as well as the surety, Mediator, and messenger of it, and of truth in general; to which he has bore witness by his word and doctrines; by his works and miracles; by his sufferings and death; by the Scriptures of truth; by his Gospel, and the ministers of it; and by his spirit, and a faithful witness he is:

a leader and commander to the people; he is a "leader", as he is a teacher of his people, who teaches them to profit, and leads them in the way they should go; as a king that guides his subjects with the skilfulness of his hands, as David the type of him did; as a general leads out and on his armies to battle; as a shepherd leads his flock to good pastures; as a guide to those that know not the way; and as one that goes before others by way of example: Christ leads his people out of their own ways into his ways; and he leads them in a right way to the city of their habitation, to heaven at last; and he leads them on gradually and gently, as they are able to bear. He is a "commander" in a military way, a wise, powerful, valiant, and courageous one, and always victorious; and in a political sense, as a King commands his subjects, whose commands are to be obeyed; and indeed they are written on the hearts of his people; they are not grievous, though they cannot be performed in their own strength; nor is it designed that life and salvation should be obtained by the observance of them, but are done to testify subjection to Christ, and gratitude to him. The Targum is,

"behold, I have appointed him a Prince to the people, a King, and a ruler over all kingdoms.''