David penned this psalm in his old age, as appears by several passages in it, which makes many think that it was penned at the time of Absalom's rebellion; for that was the great trouble of his later days. It might be occasioned by Sheba's insurrection, or some trouble that happened to him in that part of his life of which it was foretold that the sword should not depart from his house. But he is not over-particular in representing his case, because he intended it for the general use of God's people in their afflictions, especially those they meet with in their declining years; for this psalm, above any other, is fitted for the use of the old disciples of Jesus Christ. I. He begins the psalm with believing prayers, with prayers that God would deliver him and save him (Psa 71:2, Psa 71:4), and not cast him off (Psa 71:9) or be far from him (Psa 71:12), and that his enemies might be put to shame (Psa 71:13). He pleads his confidence in God (Psa 71:1, Psa 71:3, Psa 71:5, Psa 71:7), the experience he had had of help from God (Psa 71:6), and the malice of his enemies against him (Psa 71:10, Psa 71:11). II. He concludes the psalm with believing praises (Psa 71:14, etc.). Never was his hope more established (Psa 71:16, Psa 71:18, Psa 71:20, Psa 71:21). Never were his joys and thanksgivings more enlarged (Psa 71:15, Psa 71:19, Psa 71:22-24). He is in an ecstasy of joyful praise; and, in the singing of it, we too should have our faith in God encouraged and our hearts raised in blessing his holy name.