David
Psalm 130:1ESV·traditional attribution

Out of the depths I cry to you, O LORD!

John Calvin Reformed @genevareformer

PSALM 130 Whether the Prophet in this Psalm prays in his own name in particular, or represents the whole Church, it is manifest, that finding himself overwhelmed with adversities, he supplicates deliverance with passionate ardor. And while acknowledging that he is justly chastised by the hand of God, he encourages himself and all genuine believers to cherish good hope, since God is the everlasting deliverer...

Commenting on Psalm 130:1-8

C.H. Spurgeon Reformed Baptist @princeofpreachers

Out of the depths have I cried unto thee, O Lord. This is the Psalmist's statement and plea: he had never ceased to pray even when brought into the lowest state. The depths usually silence all they engulf, but they could not close the mouth of this servant of the Lord; on the contrary, it was in the abyss itself that he cried unto Jehovah.

Matthew Henry Presbyterian @wholebiblehenry

In these verses we are taught, I. Whatever condition we are in, though ever so deplorable, to continue calling upon God, Psa 130:1. The best men may sometimes be in the depths, in great trouble and affliction, and utterly at a loss what to do, in the depths of distress and almost in the depths of despair, the spirit low and dark, sinking and drooping, cast down and disquieted.

Commenting on Psalm 130:1-4