“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.”
King James Version (KJV)
8:9 In the Spirit - Under his government. If any man have not the Spirit of Christ - Dwelling and governing in him. He is none of his - He is not a member of Christ; not a Christian; not in a state of salvation. A plain, express declaration, which admits of no exception. He that hath ears to hear, let him hear!
Ro 8:9 But ye are not in the flesh, but in the Spirit. It has just been shown that he who is under the sway of his fleshly passions is at war with God, cannot please him, and is spiritually dead. But the Christian is under the influence of the Spirit if the Spirit of God dwells in him. It does dwell in him if he is a new creature, "minding the things of the Spirit" (Ro 8:5). The Spirit of God. Observe that the Spirit is spoken of in this verse both as "the Spirit of God", and "the Spirit of Christ". Now if any man have not the Spirit of Christ, he is not his. The proof that we have this indwelling Spirit is that we "mind the things of the Spirit" (Ro 8:5) and bear its fruit (Ga 5:22,23).