Many psalms that begin with complaint and prayer end with joy and praise, but this begins with joy and praise and ends with sad complaints and petitions; for the psalmist first recounts God's former favours, and then with the consideration of them aggravates the present grievances. It is uncertain when it was penned; only, in general, that it was at a time when the house of David was woefully eclipsed; some think it was at the time of the captivity of Babylon, when king Zedekiah was insulted over, and abused, by Nebuchadnezzar, and then they make the title to signify no more than that the psalm was set to the tune of a song of Ethan the son of Zerah, called Maschil; others suppose it to be penned by Ethan, who is mentioned in the story of Solomon, who, outliving that glorious prince, thus lamented the great disgrace done to the house of David in the next reign by the revolt of the ten tribes. I. The psalmist, in the joyful pleasant part of the psalm, gives glory to God, and takes comfort to himself and his friends. This he does more briefly, mentioning God's mercy and truth (Psa 89:1) and his covenant (Psa 89:2-4), but more largely in the following verses, wherein, 1. He adores the glory and perfection of God (Psa 89:5-14). 2. He pleases himself in the happiness of those that are admitted into communion with him (Psa 89:15-18). 3. He builds all his hope upon God's covenant with David, as a type of Christ (v. 19-37). II. In the melancholy part of the psalm he laments the present calamitous state of the prince and royal family (Psa 89:38-45), expostulates with God upon it (Psa 89:46-49), and then concludes with prayer for redress (Psa 89:50, Psa 89:51). In singing this psalm we must have high thoughts of God, a lively faith in his covenant with the Redeemer, and a sympathy with the afflicted parts of the church. Maschil of Ethan the Ezrahite.