I will sing of the mercies of the LORD forever: with my mouth will I make known your faithfulness to all generations.
All Commentaries on Psalms 89:1 Go To Psalms 89
Augustine of Hippo
1. Understand, beloved, this Psalm, which I am about to explain, by the grace of God, of our hope in the Lord Jesus Christ, and be of good cheer, because He who promised, will fulfil all, as He has fulfilled much: for it is not our own merit, but His mercy, that gives us confidence in Him. He Himself is meant, in my belief, by "the understanding of Aethan the Israelite:" which has given this Psalm its title. You see then, who is meant by Aethan: but the meaning of the word is "strong." No man in this world is strong, except in the hope of God's promises: for as to our own deservings, we weak, in His mercy we are strong. Weak then in himself, strong in God's mercy, the Psalmist thus begins: "I will sing of Thy mercies, O Lord, for ever: with my mouth will I make known Thy truth unto all generations" (ver. 1).
2. Let my limbs, he saith, serve the Lord: I speak, but it is of Thine I speak. "With my mouth will I make known Thy truth:" if I obey not Thee, I am not Thy servant: if I speak on my own part, I am a liar. To speak then from Thee, and in my own person, are two things: one mine, one Thine: Truth Thine, language mine. Let us hear then what faithfulness he maketh known, what mercies he singeth.