(22) I delight.--"I delight in (and with) the Law of God." I sympathise with and approve of it after the inward man, i.e., in the higher part of my being. "The inward man" corresponds nearly, though not quite, to the "law of my mind," in the next verse. It stands rather midway between it and the spirit. The mind is the moral and rational faculties considered as moral and rational. "The inward man" is the higher part of man's nature considered as capable of receiving the divine grace. The "spirit" is the same when actually brought into communion with God.

7:18-22 The more pure and holy the heart is, it will have the more quick feeling as to the sin that remains in it. The believer sees more of the beauty of holiness and the excellence of the law. His earnest desires to obey, increase as he grows in grace. But the whole good on which his will is fully bent, he does not do; sin ever springing up in him, through remaining corruption, he often does evil, though against the fixed determination of his will. The motions of sin within grieved the apostle. If by the striving of the flesh against the Spirit, was meant that he could not do or perform as the Spirit suggested, so also, by the effectual opposition of the Spirit, he could not do what the flesh prompted him to do. How different this case from that of those who make themselves easy with regard to the inward motions of the flesh prompting them to evil; who, against the light and warning of conscience, go on, even in outward practice, to do evil, and thus, with forethought, go on in the road to perdition! For as the believer is under grace, and his will is for the way of holiness, he sincerely delights in the law of God, and in the holiness which it demands, according to his inward man; that new man in him, which after God is created in true holiness.For I delight in the law of God,.... This an unregenerate man cannot do; he does not like its commands, they are disagreeable to his corrupt nature; and as it is a threatening, cursing, damning law, it can never be delighted in by him: the moralist, the Pharisee, who obeys it externally, do not love it, nor delight in it; he obeys it not from love to its precepts, but from fear of its threatenings; from a desire of popular esteem, and from low, mercenary, selfish views, in order to gain the applause of men, and favour of God: only a regenerate man delights in the law of God; which he does, as it is fulfilled by Christ, who has answered all the demands of it: and as it is in the hands of Christ, held forth by him as a rule of holy walk and conversation; and as it is written upon his heart by the Spirit of God, to which he yields a voluntary and cheerful obedience: he serves it with his mind, of a ready mind freely, and without any constraint but that of love; he delights together with the law, as the word here used signifies; the delight is mutual and reciprocal, the law delights in him, and he delights in the law; and they both delight in the selfsame things, and particularly in the perfect obedience which the Son of God has yielded to it. The apostle adds,

after the inward man; by which he means the renewed man, the new man, or new nature, formed in his soul; which had its seat in the inward part, is an internal principle, oil in the vessel of the heart, a seed under ground, the kingdom within us, the hidden man of the heart, which is not obvious to everyone's view, it being not anything that is external, though never so good: this in its nature is agreeable to the law of God, and according to this a regenerate man delights in it: but then this restrictive limiting clause supposes another man, the old man, the carnal I, according to which the apostle did not delight in the law of God; and proves, that he speaks of himself as regenerate, and not as unregenerate, or as representing an unregenerate man, because no such distinction is to be found in such a person; nor does such a person delight at all, in any sense, upon any consideration in the law of God, but is enmity against it, and not subjected to it; nor can he be otherwise, without the grace of God.