What is the meaning of Romans 8:9?

But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his. (Romans 8:9 KJV)

But ye are not in the flesh but in the Spirit, if so be that the Spirit of God dwelleth in you. But if any man hath not the Spirit of Christ, he is none of his. (Romans 8:9 ASV)

But *ye* are not in flesh but in Spirit, if indeed God’s Spirit dwell in you; but if any one has not [the] Spirit of Christ *he* is not of him: (Romans 8:9 DBY)

But you are not in the flesh but in the Spirit, if it is so that the Spirit of God dwells in you. But if any man doesn’t have the Spirit of Christ, he is not his. (Romans 8:9 WEB)

And ye are not in the flesh, but in the Spirit, if indeed the Spirit of God doth dwell in you; and if any one hath not the Spirit of Christ–this one is not His; (Romans 8:9 YLT)

Interlinear

But <de> ye <humeis> are <este> not <ou> in <en> the flesh, <sarx> but <alla> in <en> the Spirit, <pneuma> if so be <ei per> that the Spirit <pneuma> of God <theos> dwell <oikeo> in <en> you. <humin> Now <de> if any man <ei tis> have <echo> not <ou> the Spirit <pneuma> of Christ, <Christos> he <houtos> is <esti> none <ou> of his. <autos> (Romans 8:9 KJV)

Albert Barnes’ Commentary

Verse 9.  But ye. You who are Christians.  This is the opposite character to that which he had been describing, and shows the power of the gospel.  

Not in the flesh.  Not under the full influence of corrupt desires and passions.  

But in the Spirit. That is, you are spiritually minded; you are under the direction and influence of the Holy Spirit.  

The Spirit of God. The Holy Ghost.

Dwell in you. The Holy Spirit is often represented as dwelling in the hearts of Christians, (comp. 1Co 3:16; 6:19; 2Co 6:16; Eph 2:21,22; Ga 4:6) and the meaning is not that there is a personal or physical indwelling of the Holy Ghost, but that he influences, directs, and guides Christians, producing meekness, love, joy, peace, long-suffering, gentleness, goodness, etc., Ga 5:22,23. The expression, to dwell in one, denotes intimacy of connexion, and means that those things which are the fruits of the Spirit are produced in the heart.

Have not the Spirit of Christ. The word spirit is used in a great variety of significations in the Scriptures. It most commonly in the New Testament refers to the third person of the Trinity, the Holy Ghost. But the expression “the Spirit of Christ” is not, I believe, anywhere applied to him, except it may be 1Pe 1:11. He is called often the Spirit of God, (Mt 3:16; 12:28; 1Co 2:11; 3:16; 6:11 Eph 4:30) but not the Spirit of the Father. The word spirit is often used to denote the temper, disposition; thus we say, a man of a generous spirit, or of a revengeful spirit, etc. It may possibly have this meaning here; and denotes that he who has not the temper or disposition of Christ is not his, or has no evidence of piety. But the connexion seems to demand that it should be understood in a sense similar to the expression “the Spirit of God,” and “the Spirit of him that raised up Jesus,” (Ro 8:11) and if so, it means the Spirit which Christ imparts, or sends to accomplish his work, (Joh 14:26) the Holy Spirit, sent to make us like Christ, and to sanctify our hearts. And in this sense it evidently denotes the Spirit which Christ would send to produce in us the views and feelings which he came to establish, and which shall assimilate us to himself. If this refers to the Holy Spirit, then we see the manner in which the apostle spoke of the Saviour. He regarded “the Spirit” as equally the Spirit of God and of Christ, as proceeding from both; and thus evidently believed that there is a union of nature between the Father and the Son. Such language could never be used except on the supposition that the Father and the Son are one; that. is, that Christ is Divine.

Is none of his. Is not a Christian. This is a test of piety that is easily applied; and this settles the question. If a man is not influenced by the meek, pure, and holy spirit of the Lord Jesus, if he is not conformed to his image, if his life does not resemble that of the Saviour, he is a stranger to religion. No test could be more easily applied, and none is more decisive. It matters not what else he may have. He may be loud in his professions, amiable in his temper, bold in his zeal, or active in promoting the interests of his own party or denomination in the church; but if he has not the temper of the Saviour, and does not manifest his spirit, it is as sounding brass or a tinkling cymbal.  May all who read this honestly examine themselves; and may they have that which is the source of the purest felicity, the spirit and temper of the Lord Jesus.

{o} “God dwell in you” 1Co 6:19; Ga 4:6