For I have said, Mercy shall be built up for ever: thy faithfulness shalt thou establish in the very heavens.
The writer of this psalm approaches God's throne with the covenant made to David as his anchor: God promised to sustain His favor toward this people forever through their king. He rehearses God's power in all creation and His faithfulness in redemption, yet the complaint that follows cuts sharp, God has seemingly abandoned His Church to her enemies, withdrawn all help and comfort, as though He had forgotten His own word.
AI summary
Commenting on Psalm 89:1-52
For I have said, Mercy shall be built up for ever. His heart was persuaded of it, and he had affirmed it as an indisputable truth. He was certain that upon a sure foundation the Lord intended to pile up a glorious palace of goodness—a house of refuge for all people, wherein the Son of David should for ever be glorified as the dispenser of heavenly grace.
The psalmist has a very sad complaint to make of the deplorable condition of the family of David at this time, and yet he begins the psalm with songs of praise; for we must, in every thing, in every state, give thanks; thus we must glorify the Lord in the fire.
Commenting on Psalm 89:1-4