(3) New song.--See Psalm 33:3. It seems natural to suppose that this new song is incorporated here; that we have at least the substance of it, if not the words. Possibly the very words are taken up in Psalm 40:4. And we are to find the "newness" in the magnificent vindication of spiritual above formal worship.

Shall see it and fear.--Comp. Psalm 52:6, where there is plainly a reminiscence of this passage.

Verse 3. - And he hath put a new song in my mouth (see the comment on Psalm 33:3). Even praise unto our God. Mercy and praise are cause and effect. The deliverance recorded in ver. 2 produces the praise of vers. 3-5. The phrase, "our God," shows us how David instinctively identifies himself with his people. A mercy shown to him is one shown to them. Many shall see it, and fear (comp. Deuteronomy 13:11; Deuteronomy 17:13; Deuteronomy 19:20; Deuteronomy 21:21, where the phrase, "all Israel shall hear and fear," is used of the effect produced by the capital punishment of a high-handed transgressor of the Law). There may be an allusion here to Absalom's end, which was probably followed by a certain number of executions. And shall trust in the Lord; i.e. shall have their faith in God strengthened.

40:1-5 Doubts and fears about the eternal state, are a horrible pit and miry clay, and have been so to many a dear child of God. There is power enough in God to help the weakest, and grace enough to help the unworthiest of all that trust in him. The psalmist waited patiently; he continued believing, hoping, and praying. This is applicable to Christ. His agony, in the garden and on the cross, was a horrible pit and miry clay. But those that wait patiently for God do not wait in vain. Those that have been under religious melancholy, and by the grace of God have been relieved, may apply ver. 2 very feelingly to themselves; they are brought up out of a horrible pit. Christ is the Rock on which a poor soul can alone stand fast. Where God has given stedfast hope, he expects there should be a steady, regular walk and conduct. God filled the psalmist with joy, as well as peace in believing. Multitudes, by faith beholding the sufferings and glory of Christ, have learned to fear the justice and trust in the mercy of God through Him. Many are the benefits with which we are daily loaded, both by the providence and by the grace of God.And he hath put a new song in my mouth, even praise to our God,.... Sung by him in the midst of the great congregation of angels and saints, upon his resurrection, ascension, and session at the right hand of God; see Psalm 22:22; when he went to his God and ours, to his Father and ours; and in which song he is joined by all his people above and below, Revelation 5:9;

many shall see it, and fear, and shall trust in the Lord; even all the elect of God, as many as are ordained to eternal life; the many whose sins Christ bore, for whom he became a ransom, whom he justifies and brings to glory: these all "see" him in the horrible pit and miry clay, in his state of humiliation, as bearing their sins, and the punishment due unto them; as wounded, bruised, and crucified; as rising again for their justification; and as on Mount Zion crowned with glory and honour; and a multitude of harpers with him, singing the new song; these see the salvation he has wrought out, the glory, fulness, and suitableness of it, and their interest in it; and they "fear" not with a fear of hell and damnation, which is inconsistent with the trust after mentioned; but with a godly and filial fear, which arises from and is encouraged by the grace and goodness of God, their faith in the sufferings, death, and resurrection of Christ Jesus, and which render him a proper object of trust and confidence; for he is so both as suffering, crucified, and slain, and as risen again, and exalted at the Father's right hand, Galatians 2:20.