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10. Teach me that I may do thy will. He now rises to something higher, praying not merely for deliverance from outward troubles, but, what is of still greater importance, for the guidance of God’s Spirit, that he might not decline to the right hand or to the left, but be kept in the path of rectitude. This is a request which should never be forgotten when temptations assail us with great severity, as it is peculiarly difficult to submit to God without resorting to unwarrantable methods of relief. As anxiety, fear, disease, languor, or pain, often tempt persons to particular steps, David’s example should bad us to pray for divine restraint, and that we may not be hurried, through impulses of feeling, into unjustifiable courses. We are to mark carefully his way of expressing himself, for what he asks is not simply to be taught what the will of God is, but to be taught and brought to the observance, and doing of it. The former kind of teaching is of less avail, as upon God’s showing us our duty we by no means necessarily follow it, and it is necessary that he should draw out our affections to himself. God therefore must be master and teacher to us not only in the dead letter, but by the inward motions of his Spirit; indeed there are three ways in which he acts the part of our teacher, instructing us by his word, enlightening our minds by the Spirit, and engraving instruction upon our hearts, so as to bring us observe it with a true and cordial consent. The mere hearing of the word would serve no purpose, nor is it enough that we understand it; there must be besides the willing’ obedience of the heart. Nor does he merely say, Teach me that I may be capable of doing, as the deluded Papists imagine that the grace of God does no more than make us flexible to what is good, but he seeks something to be actually and presently done.

He insists upon the same thing in the next clause, when he says, Let thy good Spirit lead me, etc., for he desires the guidance of the Spirit not merely as he enlightens our minds, but as he effectually influences the consent of our hearts, and as it were leads us by the hand. The passage in its connection warns us of the necessity of being sedulously on our guard against yielding to inordinate passions in any contests we may have with wicked persons, and as we have no sufficient wisdom or power of our own by which to check and restrain these passions, that we should always seek the guidance of God’s Spirit, to keep them in moderation. More generally, the passage teaches us what we are to think of free will; for David here denies the will to have the power of judging rightly, till our hearts be formed to a holy obedience by the Spirit of God. The term leading, which I have already adverted to, proves also that David did not hold that middle species of grace which Papists talk so much about, and which leaves man in a state of suspension or indecision, but asserts something much more effectual, agreeably to what Paul says, (Philippians 2:13,) that

“it is God who works in us both to will and to do
of his good pleasure.”

By the words right hand, I understand, figuratively, uprightness; David’s meaning being, that we are drawn into error whenever we decline from what is agreeable to the will of God. The term Spirit is tacitly opposed to that corruption which is natural to us; what he says being tantamount to this, that all men’s thoughts are polluted and perverted, till reduced to right rule by the grace of the Spirit. It follows that nothing which is dictated by the judgment of the flesh is good or sound. I grant that wicked men are led away by an evil spirit sent from God, for he executes his judgments by the agency of devils, ²⁵⁴²⁵⁴     “Je confesse bien que le mauvais esprit de Dieu agite et transporte les reprouvez, (car Dieu execute ses jugemens par les diables,)” etc. — Fr. (1 Samuel 16:14;) but when David in this place speaks of God’s good Spirit, I do not imagine that he has any such strained allusion, but rather that he takes here to himself the charge of corruption, and assigns the praise of whatever is good, upright, or true, to the Spirit of God. When he says, Because thou art my God, he shows that his confidence of obtaining his request was founded entirely upon the free favor and promises of God. It is not a matter lying within our own power to make him our God, but it rests with his free preventing grace.