Background

One of the best-known Psalms among our contemporaries is Psalm 40. No doubt, this is because for many years the Irish rock band U2 closed out their concerts with a very moving rendition of it, in which huge audiences sang along with the band. As written, Psalm 40 reflects the author’s (David) thanksgiving for deliverance from urgent danger. In light of this sense of immediate need for deliverance of which David is speaking, John Calvin–who was very reticent to speak about himself–describes his conversion as being pulled from the mire of his addiction to the papacy, a direct reference to verse 2 of this particular Psalm. Calvin goes on to say, “God by a sudden conversion subdued and brought my mind to a teachable frame, which was more hardened in such matters than might have been expected from one at my early period of life.”[1] In light of this Psalm’s historic importance, and current familiarity, an exposition of Psalm 40 would be beneficial.

The Book of Psalms was the hymnal of ancient Israel. The Psalter is also one of the most beloved portions of God’s word, provides Christ’s church with much of its song, and also serves as the foundation for the devotional life of God’s people. The more we know about the Book of Psalms, the greater our desire to read, reflect upon, and sing them as God’s people have done throughout the ages.

The Five Books of the Psalter

The Psalter is composed of 150 songs which reflect the entire range of human emotion, from despair to jubilation. Although the Psalter was written by different authors over the course of much of Israel’s history, most Psalms are closely tied to the life and times of David (Israel’s most prominent king). Many of the Psalms reflect Israel’s worship of YHWH during this turbulent period in the nation’s history. There are a number of different types and genres of Psalms. There are Psalms of praise, Psalms of lament (67 of them), there are imprecatory Psalms (which invoke God’s judgment on his enemies), there are messianic Psalms (which prefigure the coming of Jesus Christ), there are “enthronement” Psalms (which speak of God as king and ruler of all), there are wisdom Psalms (which reveal to us wisdom from God), and there are Psalms of trust, (which express confidence in God’s power, and in God’s faithfulness in keeping his covenant promises).[2] And then, there is the famous “shepherd Psalm,” the twenty-third Psalm.

There are also a number of names attached to the 150 Psalms (i.e., David, Solomon, Moses, Asaph, the Sons of Korah). 73 of the Psalms are ascribed to David (king of Israel). 12 Psalms are ascribed to Asaph (who was one of David’s three temple musicians, along with Heman and Jeduthun). 11 Psalms are ascribed to the Sons of Korah (who were a guild of temple singers), 3 are ascribed to Jeduthun (a Levite), 2 are connected to Solomon, as well as one each to Moses, Heman (a grandson of Samuel), and Ethan (a symbol player in David’s court and thought by some to be another name for Jeduthun). The remainder of the Psalms are unattributed. With the exception Moses, the others to whom various Psalms are ascribed are mentioned throughout the two books of Chronicles, so we know certain details about them and their service of YHWH. Even though not all of the Psalms were written by David, it is reasonable to speak, as many do, of the “Psalms of David” since the vast majority of them are ascribed to David or his known associates.

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