David
Psalm 89:1BSB·traditional attribution

A Maskil of Ethan the Ezrahite. I will sing of the loving devotion of the LORD forever; with my mouth I will proclaim Your faithfulness to all generations.

John Calvin Reformed @genevareformer

PSALM 89 The prophet who wrote this psalm, whoever he was, in approaching the throne of grace to make supplication to God in behalf of the afflicted Church, lays down, as an encouragement both to himself and the rest of the faithful to cherish good hope, the covenant which God had made with David.

Commenting on Psalm 89:1-52

C.H. Spurgeon Reformed Baptist @princeofpreachers

I will sing of the mercies of the Lord for ever. A devout resolve, and very commendable when a man is exercised with great trouble on account of an apparent departure of the Lord from his covenant and promise. Whatever we may observe abroad or experience in our own persons, we ought still to praise God for his mercies, since they most certainly remain the...

Matthew Henry Presbyterian @wholebiblehenry

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