Psalms 40:3 - Exposition

And he hath put a new song in my mouth (see the comment on Psalms 33:3 ). Even praise unto our God . Mercy and praise are cause and effect. The deliverance recorded in Psalms 40:2 produces the praise of Psalms 40:3-5 . 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.