David
Psalm 88:4ESV·traditional attribution

I am counted among those who go down to the pit; I am a man who has no strength,

John Calvin Reformed @genevareformer

PSALM 88 This psalm contains very grievous lamentations, poured forth by its inspired penman when under very severe affliction, and almost at the point of despair. But he, at the same time, whilst struggling with sorrow, declares the invincible steadfastness of his faith; which he displayed in calling upon God to deliver him, even when he was in the, deep darkness of death.

Commenting on Psalm 88:1-18

C.H. Spurgeon Reformed Baptist @princeofpreachers

I am counted with them that go down into the pit. My weakness is so great that both by myself and others I am considered as good as dead. If those about me have not ordered my coffin they have at least conversed about my sepulchre, discussed my estate, and reckoned their share of it.

Matthew Henry Presbyterian @wholebiblehenry

It should seem, by the titles of this and the following psalm, that Heman was the penman of the one and Ethan of the other. There were two, of these names, who were sons of Zerah the son of Judah, Ch1 2:4, Ch1 2:6. There were two others famed for wisdom, Kg1 4:31, where, to magnify Solomon's wisdom, he is said to be wiser than Heman and Ethan.

Commenting on Psalm 88:1-9