(10) Right spirit.--So LXX. and Vulg.; but the constant of the margin is nearer the Hebrew, and better.

Verse 10. - Create in me a clean heart, O God; i.e. do more than purify me - do more than cleanse me (ver. 7); by an act of creative power (בּרא) make in me a new clean heart. Compare the Christian doctrine of the "new birth" and "new life." And renew a right spirit within me. "Heart" and "spirit" are used interchangeably for the inward essence of man; but, as Professor Cheyne observes, "Heart emphasizes the individual side of a man's life; spirit, its Divine, or at least preternatural side." David, in asking both for a new heart and a new spirit, requests the renovation of his entire mental and moral nature, which he recognizes as corrupt and depraved.

51:7-15 Purge me with hyssop, with the blood of Christ applied to my soul by a lively faith, as the water of purification was sprinkled with a bunch of hyssop. The blood of Christ is called the blood of sprinkling, Heb 12:24. If this blood of Christ, which cleanses from all sin, cleanse us from our sin, then we shall be clean indeed, Heb 10:2. He asks not to be comforted, till he is first cleansed; if sin, the bitter root of sorrow, be taken away, he can pray in faith, Let me have a well-grounded peace, of thy creating, so that the bones broken by convictions may rejoice, may be comforted. Hide thy face from my sins; blot out all mine iniquities out of thy book; blot them out, as a cloud is blotted out and dispelled by the beams of the sun. And the believer desires renewal to holiness as much as the joy of salvation. David now saw, more than ever, what an unclean heart he had, and sadly laments it; but he sees it is not in his own power to amend it, and therefore begs God would create in him a clean heart. When the sinner feels this change is necessary, and reads the promise of God to that purpose, he begins to ask it. He knew he had by his sin grieved the Holy Spirit, and provoked him to withdraw. This he dreads more than anything. He prays that Divine comforts may be restored to him. When we give ourselves cause to doubt our interest in salvation, how can we expect the joy of it? This had made him weak; he prays, I am ready to fall, either into sin or into despair, therefore uphold me with thy Spirit. Thy Spirit is a free Spirit, a free Agent himself, working freely. And the more cheerful we are in our duty, the more constant we shall be to it. What is this but the liberty wherewith Christ makes his people free, which is contrasted with the yoke of bondage? Ga 5:1. It is the Spirit of adoption spoken to the heart. Those to whom God is the God of salvation, he will deliver from guilt; for the salvation he is the God of, is salvation from sin. We may therefore plead with him, Lord, thou art the God of my salvation, therefore deliver me from the dominion of sin. And when the lips are opened, what should they speak but the praises of God for his forgiving mercy?Create in me a clean heart, O God,.... Which was now defiled with sin, and of which being convinced, he was led more and more to see the impurity of his heart and nature, from which all his evil actions flowed; and being sensible that he could not make his heart clean himself, and that this was the work of God, and a work which required creating power, he entreats it of him: for as the first work of conversion is no other than a creation, or a production of something new, which was not before; so the restoring of a backslider, as it goes by the same name, it requires the same power; and as the implantation of grace at first, and particularly of faith, is a work of almighty power; so the same power must be put forth to bring it into exercise, after falls into sin; that it may afresh deal with the heart purifying blood of Christ, which only can make it clean, and is what is here meant;

and renew a right spirit within me; by which is designed, not the Holy Spirit of God (k); for he is the renewer; nor the spirit or soul of man as to its essence; but with respect to the qualities of it; and here it signifies a renewing of the inward man, or an increase of grace, and causing it to abound in act and exercise; and intends a spirit of uprightness and integrity, in opposition to dissimulation and hypocrisy; a spirit "prepared and ready" (l) to every good work, Matthew 26:41; "one firm" (m) and unmoved from obedience to the Lord, by sin, temptations, and snares; a heart fixed, trusting in the Lord, and comfortably assured of an interest in pardoning grace and mercy.

(k) Vid. Zohar in Gen. fol. 107. 3.((l) "paratum seu promptum", Gejerus, Michaelis; so Ainsworth. (m) "Firmua", Junius & Tremellius, Piscator, Cocceius.