David
Psalm 88:5BSB·traditional attribution

I am forsaken among the dead, like the slain who lie in the grave, whom You remember no more, who are cut off from Your care.

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

Free among the dead. Unbound from all that links a man with life, familiar with death's door, a freeman of the city of the sepulchre, I seem no more one of earth's drudges, but begin to anticipate the rest of the tomb. It is a sad case when our only hope lies in the direction of death, our only liberty of spirit amid the congenial horrors of corruption.

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