David
Psalm 56:9ESV·traditional attribution

Then my enemies will turn back in the day when I call. This I know, that God is for me.

John Calvin Reformed @genevareformer

PSALM 56 In this psalm David mixes complaint with prayer, and assuages the distress of his mind by meditation upon the mercy of God. He pray, that he may experience the divine help under the persecutions to which he was subjected by Saul, and his other enemies; and expresses his confidence of success.

Commenting on Psalm 56:1-13

C.H. Spurgeon Reformed Baptist @princeofpreachers

When I cry unto thee, then shall mine enemies turn back. So soon as I pray they shall fly. So surely as I cry they shall be put to the rout. The machinery of prayer is not always visible, but it is most efficient. God inclines us to pray, we cry in anguish of heart, he hears, he acts, the enemy is turned back.

Matthew Henry Presbyterian @wholebiblehenry

Several things David here comforts himself with in the day of his distress and fear. I. That God took particular notice of all his grievances and all his griefs, Psa 56:8. 1. Of all the inconveniences of his state: Thou tellest my wanderings, my flittings, so the old translation.

Commenting on Psalm 56:8-13