David
Psalm 38:4BSB·traditional attribution

For my iniquities have overwhelmed me; they are a burden too heavy to bear.

John Calvin Reformed @genevareformer

PSALM 38 David, suffering under some severe and dangerous malady, as may be conjectured, acknowledges that he is chastened by the Lord, and entreats him to turn away his anger from him. In order the more effectually to induce God to have mercy upon him, he bewails before him the severity of his afflictions in a variety of particulars. These we shall consider separately, and in order.

Commenting on Psalm 38:1-22

C.H. Spurgeon Reformed Baptist @princeofpreachers

For mine iniquities are gone over mine head. Like waves of the deep sea; like black mire in which a man utterly sinks. Above my hopes, my strength, my life itself, my sin rises in its terror. Unawakened sinners think their sins to be mere shallows, but when conscience is aroused they find out the depth of iniquity. As an heavy burden they are too heavy for me.

Matthew Henry Presbyterian @wholebiblehenry

The title of this psalm is very observable; it is a psalm to bring to remembrance; the 70th psalm, which was likewise penned in a day of affliction, is so entitled. It is designed, 1. To bring to his own remembrance.

Commenting on Psalm 38:1-11