David
Psalm 88:6ESV·traditional attribution

You have put me in the depths of the pit, in the regions dark and deep.

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

Thou hast laid me in the lowest pit, in darkness, in the deeps. What a collection of forcible metaphors, each one expressive of the utmost grief. Heman compared his forlorn condition to an imprisonment in a subterranean dungeon, to confinement in the realms of the dead, and to a plunge into the abyss. None of the similes are strained.

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