LORD, I have {d} hoped for thy salvation, and done thy commandments.

(d) He shows that we must first have faith before we can work and please God.

Jamieson-Fausset-Brown Bible Commentary

166-168. As they keep God's law from motives of love for it, and are free from slavish fear, the are ready to subject their lives to His inspection.

Matthew Henry's Concise Commentary

119:161-168 Those whose hearts stand in awe of God's word, will rather endure the wrath of man, than break the law of God. By the word of God we are unspeakable gainers. Every man hates to have a lie told him, but we should more hate telling a lie; by the latter we give an affront to God. The more we see the beauty of truth, the more we shall see the hateful deformity of a lie. We are to praise God even for afflictions; through grace we get good from them. Those that love the world have great vexation, for it does not answer what they expect; those that love God's word have great peace, for it outdoes what they expect. Those in whom this holy love reigns, will not perplex themselves with needless scruples, or take offence at their brethren. A good hope of salvation will engage the heart in doing the commandments. And our love to the word of God must subdue our lusts, and root out carnal affections: we must make heart work of it, or we make nothing of it. We must keep the commandments of God by obedience to them, and his promises by reliance on them. God's eye is on us at all times; this should make us very careful to keep his commandments.