This is the force of the seventeenth verse: "Now the Lord is the Spirit: and where the Spirit of the Lord is, there is liberty." The Lord, of course, is Christ, and the Spirit is that of which Paul has already spoken in the sixth verse. It is the Holy Spirit, the Lord and Giver of life under the new covenant. He who turns to Christ receives this Spirit; it is through it that Christ dwells in His people; what are called "fruits of the Spirit" are traits of Christ's own character which the Spirit produces in the saints; practically, therefore, the two may be identified, and hence the expression "the Lord is the Spirit," though startling at first sight, is not improper, and ought not to mislead.[33] It is a mistake to connect it with such passages as Rom. i. 4, and to draw inferences from it as to Paul's conception of the person of Christ. He does not say "the Lord is spirit," but "the Lord is the Spirit"; what is in view is not the person of Christ so much as His power. To identify the Lord and the Spirit without qualification, in the face of the benediction in chap. xiii. 14, is out of the question. The truth of the passage is the same as that of Rom. viii. 9 ff.: "If any man have not _the Spirit of Christ_, he is none of His. And if _Christ is in you_," etc. Here, so far as the practical experience of Christians goes, no distinction is made between the Spirit of Christ and Christ Himself; Christ dwells in Christians through His Spirit. The very same truth, as is well known, pervades the chapters in the Fourth Gospel in which Christ consoles His disciples for His departure from this world; He will not leave them orphans--He will come to them, and remain with them in the other Comforter. To turn to Christ, the Apostle wishes to assert with the utmost emphasis, is not to do a thing which has no virtue and no consequences; it is to turn to one who has received of the Father the gift of the Holy Ghost, and who immediately sets up the new spiritual life, which is nothing less than His own life, by that Spirit, in the believing soul. And summing up in one word the grand characteristic and distinction of the new covenant, as realised by this indwelling of Christ through His Spirit, he concludes: "And where the Spirit of the Lord is, there is liberty."
In the interpretation of the last word, we must have respect to the context; liberty has its meaning in contrast with that state to which the old covenant had reduced those who adhered to it. It means freedom from the law; freedom, fundamentally, from its condemnation, thanks to the gift of righteousness in Christ; freedom, also, from its letter, as something simply without us and over against us. No written word, as such, can ever be pleaded against the voice of the Spirit within. Even the words we call in an eminent sense "inspired," words of the Spirit, are subject to this law: they do not put a limit to the liberty of the spiritual man. He can overrule the letter of them when the literal interpretation or application would contravene the spirit which is common both to them and him. This principle is capable of being abused, no doubt, and by bad men and fanatics has been abused; but its worst abuses can hardly have done more harm than the pedantic word-worship which has often lost the soul even of the New Testament, and read the words of the Lord and His Apostles with a veil upon its face through which nothing could be seen. There is such a thing as an unspiritual scrupulosity in dealing with the New Testament, now that we have it in documentary form, just as there used to be in dealing with the Old; and we ought to remind ourselves continually that the documentary form is an accident, not an essential, of the new covenant. That covenant existed, and men lived under it and enjoyed its blessings, before it had any written documents at all; and we shall not appreciate its characteristics, and especially this one of its spiritual freedom, unless we put ourselves occasionally, in imagination, in their place. It is far easier to make Paul mean too little than too much; and the liberty of the Spirit in which he exults here covers, we may be sure, not only liberty from condemnation, and liberty from the unspiritual yoke of the ritual law, but liberty from all that is in its nature statutory, liberty to organise the new life, and to legislate for it, from within.