Charles Ellicott Commentary 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." — Romans 8:11 (ASV)

And this vitality extends beyond the grave. It will even act upon that material body which had just been described as given over to death. Die it must; but the same Spirit to whom the soul owes its life will also reinfuse life into the dead body, just as the body of Christ Himself was raised from the dead.

By his Spirit . . .—The balance of authority is in favor of the reading, “because of His Spirit” (as in margin); the other is an Alexandrian correction. It cannot be thought that God would leave in the grave that body in which His own Spirit has dwelt, i.e., has been present not only in close but permanent contact, though the psychological question was, of course, not present to the mind of the Apostle.