David
Psalm 57:3BSB·traditional attribution

He reaches down from heaven and saves me; He rebukes those who trample me. Selah God sends forth His loving devotion and His truth.

John Calvin Reformed @genevareformer

PSALM 57 This psalm consists of two parts. In the first, David gives expression to the anxiety which he felt, imploring Divine assistance against Saul and his other enemies. In the second, he proceeds upon the confident expectation of deliverance, and stirs up his soul to the exercise of praise.

Commenting on Psalm 57:1-11

C.H. Spurgeon Reformed Baptist @princeofpreachers

He shall send from heaven. If there be no fit instruments on earth, heaven shall yield up its legions of angels for the succour of the saints. We may in times of great straits expect mercies of a remarkable kind; like the Israelites in the wilderness, we shall have our bread hot from heaven, new every morning; and for the overthrow of our enemies God...

Matthew Henry Presbyterian @wholebiblehenry

The title of this psalm has one word new in it, Al-taschith - Destroy not. Some make it to be only some known tune to which this psalm was set; others apply it to the occasion and matter of the psalm.

Commenting on Psalm 57:1-6