Romans 8:9
But you are not in the flesh, but in the spirit, if indeed the Spirit of God ²dwells in you. Yet if anyone does not have the Spirit of Christ, he is not of Him.

    9² I.e., makes home, resides (cf. Eph. 3:17). If we allow the Spirit of the Triune God to make His home in us, that is, to settle Himself in us with adequate room, then in our experience we are in the spirit and are no longer in the flesh. If we are so, the Triune God as the Spirit will be able to spread from our spirit (v. 10) into our soul, represented by our mind (v. 6), and eventually He will even give life to our mortal body (v. 11).