Rom 8:9-11But ye are not in the flesh, etc. 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." Now if any man have not the Spirit of Christ, he is none of his. The proof that we have this indwelling Spirit is that we "mind the things of the Spirit" (Rom_8:5), and bear its fruit (Gal_5:22-23). Observe that the Spirit is spoken of in this verse both as the Spirit of God, and the Spirit of Christ. But if Christ be in you. Christ is in us by his Spirit. Notice that the indwelling of the Spirit of God, having the Spirit of Christ, belonging to Christ, having Christ in us, are all varied expressions of the same great fact. The body is dead because of sin. Our bodies have died physically because death came into the world through sin. But the Spirit is life. Our spirit is made alive by union with Christ, and partaking of his righteousness. But if the Spirit of him, etc. The Holy Spirit. That Spirit in us is a pledge that God will raise us, even as Christ was raised from the tomb. Shall also quicken your mortal bodies. Though the body be doomed to death "because of sin," it shall be "quickened" for those who have God's Spirit dwelling in them. Even our mortal bodies shall be raised, not in corruption, but in incorruption (1Co_15:42-44).