(13) With my lips.—He has not kept his hidden treasure to himself, but, like the good householder of the Gospels, has brought out things new and old.

Psalm 119:13-15. With my lips have I declared, &c. — If thou wilt teach me, I will teach others, as I have already done. I have rejoiced in thy testimonies — In the study and practice of them. I will meditate, &c. — Will seriously consider the nature, and design, and extent of thy precepts, and especially so far as they concern my own duty; and have respect — Hebrew, ואבשׂה, I will look unto thy ways — As workmen constantly and carefully look to their rule to guide themselves by it.

119:9-16 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.With my lips have I declared - That is, I have openly and publicly made thy words known to others; I have defended and vindicated them.

All the judgments - The word judgments here means the same as statutes or laws: and the idea is, that he had been on the side of those laws, and had endeavored by argument and persuasion to bring others under their influence. How he had done it we are not informed; but we have no reason to suppose that the author of the psalm was a minister of religion, and if not, then we have here an example of what a man who does not claim to be a public teacher may do, and should do, in making known and defending divine truth. Every man is as much bound to do this in his sphere as the minister of religion is in his; and private member's of the church have often an opportunity of doing this to more advantage than the ministers of the gospel possess.

Of thy mouth - With my mouth I speak those things which have proceeded from thine. I speak in thy name; I declare thy truth. It is not my own; it is thine.

10-16. We must carefully treasure up the word of God, declare it to others, meditate on it, and heartily delight in it; and then by His grace we shall act according to it. If thou wilt teach me, I will teach others, as I have already done; and so thou shalt have glory, and others benefit by it.

With my lips have I declared all the judgments of thy mouth. Not the judgments of his hand, what he executes on an ungodly world; nor the intricate dispensations of his providence; those judgments of his now unsearchable, though before long will be manifest; these the psalmist could not declare: but the revelation of the will of God, what his mouth has uttered, doctrines and precepts of righteousness and truth; these, though David had them in his heart, he did not conceal them from men; but out of the abundant experience he had of them in his heart, his lips spake of them, of their nature and excellency, and usefulness unto others: and whereas he desired to be instructed more and more in them, it was in order to teach them, and declare them to others; even all of them, in the most sincere and impartial manner; see Acts 20:27. With my lips have I declared all the judgments of thy mouth.