David
Psalm 119:118BSB·traditional attribution

You reject all who stray from Your statutes, for their deceitfulness is in vain.

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 is, I. God's judgment on wicked people, on those that wander from his statutes, that take their measures from other rules and will not have God to reign over them. All departure from God's statutes is certainly an error, and will prove a fatal one.

Commenting on Psalm 119:118-120

John Gill Reformed Baptist @doctorgill

Be surety for thy servant for good,.... The psalmist was, in a like case with Hezekiah, oppressed; and therefore desires the Lord would undertake for him, appear on his side, and defend him, Psa 38:14; and if God himself is the surety of his people, and engages in their behalf, they need fear no enemy.