(10) With my whole heart . . .--The self-mistrust of the second clause is a proof of the reality of the first. "Lord, I believe; help thou my unbelief," is another form of this.

Verse 10. - With my whole heart have I sought thee (comp. ver. 2). O let me not wander from thy commandments; i.e. "let me not accidentally and through ignorance stray from the right path."

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 whole heart have I sought thee,.... Not himself, his own honour and applause, as formal worshippers and self-righteous persons do; but the Lord and his glory, his face, his presence, and communion with him, his grace, and fresh supplies of it, to help in time of need; his doctrine, as the Targum; and to know more of it, and of him, and of his mind and will; and this he did in the most sincere manner, with all his heart and soul. The character of the good man, in Psalm 119:2; the psalmist applies to himself; see Isaiah 26:9; and uses it as an argument to obtain the following request:

O let me not wander from thy commandments; the way of them. Good men are apt to go astray, as David, Psalm 119:176; their hearts, their affections, and their feet, wander from, the way of their duty: there are many things which lead them aside, and cause them to turn to the right hand or the left, at least solicit them to do so; as a corrupt nature, an evil heart, a body of sin and death, the snares of the world, and the temptations of Satan; and, what is worst of all, when God leaves them to themselves, withdraws the influences of his grace, and brings them into such circumstances as expose them to going astray, which the psalmist here deprecates; "suffer me not to wander", but uphold my goings in thy ways; preserve me by thy grace, and keep me by thy power; hold me by thy right hand, and guide and direct me. Or, "cause me not to wander" (q) &c. a like petition to those in Psalm 141:3, Matthew 6:13; with which last Kimchi compares these words.

(q) "ne errare facias me", Pagninus, Montanus.