God's faithful love towards the house of David, a love faithful to His promises, will he sing without ceasing, and make it known with his mouth, i.e., audibly and publicly (cf. Job 19:16), to the distant posterity. Instead of חסדי, we find here, and also in Lam 3:22, חסדי with a not merely slightly closed syllable. The Lamed of לדר ודר is, according to Psa 103:7; Psa 145:12, the datival Lamed. With כּי־אמרתּי (lxx, Jerome, contrary to Psa 89:3, ὅτι εἶπας) the poet bases his resolve upon his conviction. נבנה means not so much to be upheld in building, as to be in the course of continuous building (e.g., Job 22:23; Mal 3:15, of an increasingly prosperous condition). Loving-kindness is for ever (accusative of duration) in the course of continuous building, viz., upon the unshakeable foundation of the promise of grace, inasmuch as it is fulfilled in accordance therewith. It is a building with a most solid foundation, which will not only not fall into ruins, but, adding one stone of fulfilment upon another, will rise ever higher and higher. שׁמים then stands first as casus absol., and בּהם is, as in Psa 19:5, a pronoun having a backward reference to it. In the heavens, which are exalted above the rise and fall of things here below, God establishes His faithfulness, so that it stands fast as the sun above the earth, although the condition of things here below seems sometimes to contradict it (cf. Psa 119:89). Now follow in Psa 89:4-5 the direct words of God, the sum of the promises given to David and to his seed in 2 Sam. 7, at which the poet arrives more naturally in Psa 89:20. Here they are strikingly devoid of connection. It is the special substance of the promises that is associated in thought with the “loving-kindness” and “truth” of Psa 89:3, which is expanded as it were appositionally therein. Hence also אכין and תּכין, וּבניתי and יבּנה correspond to one another. David's seed, by virtue of divine faithfulness, has an eternally sure existence; Jahve builds up David's throne “into generation and generation,” inasmuch as He causes it to rise ever fresh and vigorous, never as that which is growing old and feeble.
Verses 5-8
At the close of the promises in Psa 89:4-5 the
