David
Psalm 119:34ESV·traditional attribution

Give me understanding, that I may keep your law and observe it with my whole heart.

John Calvin Reformed @genevareformer

PSALM 119 As this psalm treats of various matters, it is difficult to give an epitome of its contents. There are, however, two things which the prophet mainly aims at; the exhorting of the children of God to follow godliness and a holy life; and the prescribing of the rule, and pointing out the form of the true worship of God, so that the faithful...

Commenting on Psalm 119:1-176

Matthew Henry Presbyterian @wholebiblehenry

Here, I. David prays earnestly that God himself would be his teacher; he had prophets, and wise men, and priests, about him, and was himself well instructed in the law of God, yet he begs to be taught of God, as knowing that none teaches like him, Job 36:22. Observe here, 1.

Commenting on Psalm 119:33-34

John Gill Reformed Baptist @doctorgill

Incline my heart unto thy testimonies,.... To read the word of God, to hear it opened and explained, to observe and keep the things contained in it; to which there is a disinclination in men naturally: but the Lord, who fashions the hearts of men, and has them in his hands, can bend and incline them by his efficacious grace to regard these his testimonies...