David
Psalm 25:12ESV·traditional attribution

Who is the man who fears the LORD? Him will he instruct in the way that he should choose.

John Calvin Reformed @genevareformer

PSALM 25. This psalm consists of meditations mingled with prayers. Being rudely treated, and grievously distressed, by the cruelty of his enemies, David, in order to obtain assistance from God, first acknowledges that God had justly made use of this as a means of chastising and punishing him for his sins; and, therefore, he prays for their forgiveness, that he may at once enjoy assurance...

Commenting on Psalm 25:1-22

C.H. Spurgeon Reformed Baptist @princeofpreachers

What man is he that feareth the Lord? Let the question provoke self examination. Gospel privileges are not for every pretender. Art thou of the seed royal or no? Him shall he teach in the way that he shall choose. Those whose hearts are right shall not err for want of heavenly direction. Where God sanctifies the heart he enlightens the head.

Matthew Henry Presbyterian @wholebiblehenry

God's promises are here mixed with David's prayers. Many petitions there were in the former part of the psalm, and many we shall find in the latter; and here, in the middle of the psalm, he meditates upon the promises, and by a lively faith sucks and is satisfied from these breasts of consolation; for the promises of God are not only the best foundation...

Commenting on Psalm 25:8-14