| Barnes' Notes on the Bible I will delight myself in thy statutes - I will find my happiness in thy laws. See Psalm 1:2, note; Psalm 112:1, note. I will not forget thy word - I will not allow the world to crowd it out of my mind.
Clarke's Commentary on the BibleI will delight myself - The word is very emphatical: אשתעשע eshtaasha, I will skip about and jump for joy. 14. He must exult in God's word as his treasure, live in the spirit of obedience as his work, and ever glory in God, who has called him to such a state of salvation. 15. He must never forget what God has done for him, done in him, and promised farther to do; and he must not forget the promises he had made, and the vows of the Lord that are upon him. Any young man who attends to these fifteen particulars will get his impure way cleansed; victory over his sin; and, if he abide faithful to the Lord that bought him, an eternal heaven at last among them that are sanctified.
Gill's Exposition of the Entire BibleI will delight myself in thy statutes,.... In looking over them; in meditating on them; in obeying them, and walking according to them; as every good man does delight in the law of the Lord, after the inward man, Romans 7:22; see Psalm 119:24; I will not forget thy word: he took all proper methods to fix it in his memory; he laid it up in his mind; he meditated upon it in his heart, and he talked of it with his lips, Psalm 119:11.
Geneva Study BibleI will delight myself in thy statutes: I will not forget thy word.
Matthew Henry's Concise Commentary119:9-16 To original corruption all have added actual sin. The ruin of the young is either living by no rule at all, or choosing false rules: let them walk by Scripture rules. To doubt of our own wisdom and strength, and to depend upon God, proves the purpose of holiness is sincere. God's word is treasure worth laying up, and there is no laying it up safe but in our hearts, that we may oppose God's precepts to the dominion of sin, his promises to its allurements, and his threatenings to its violence. Let this be our plea with Him to teach us his statutes, that, being partakers of his holiness, we may also partake of his blessedness. And those whose hearts are fed with the bread of life, should with their lips feed many. In the way of God's commandments there is the unsearchable riches of Christ. But we do not meditate on God's precepts to good purpose, unless our good thoughts produce good works. I will not only think of thy statutes, but do them with delight. And it will be well to try the sincerity of our obedience by tracing the spring of it; the reality of our love by cheerfulness in appointed duties. | 
