Romans 8:11

But if the Spirit of him that raised up Jesus from the dead dwelleth in you, he that raised up Christ Jesus from the dead shall give life also to your mortal bodies through his Spirit that dwelleth in you.

In the preceding verse, Paul mentioned the body's being sentenced to death, due to that portion of the primeval sentence being still operative, even upon Christians; but even the death of the body is at last to be nullified by the salvation that is in Christ Jesus. Such a nullification will take place when the "dead in Christ" rise to meet the Lord in the air. The resurrection itself, in this verse, is made to depend upon the indwelling of the Spirit, for it is promised, "If the Spirit ... dwelleth in you."

The resurrection of Christ appears here as a pledge of a similar resurrection of Christians, a resurrection of their "mortal bodies," just as Christ's mortal body was raised and recognized by his disciples. Thus salvation is more than merely saving the soul, although that is likewise glorious; but this teaches that body and soul alike will participate in the ultimate glory of eternal life. The great connective between the resurrection of Christ and the ultimate resurrection of his disciples is the blessed ministry of the Holy Spirit in Christian hearts, and thus appears the absolute necessity of the Spirit's residence in Christian hearts. This place, along with Romans 8:9 compels the conclusion that if one does not have the Spirit of God in his soul, he is not a Christian, not in Christ, not saved, and is not in any sense Christ's.