Matthew Poole and continuators on Romans 8:10

10 And if Christ be in you, the body is dead because of sin; but the Spirit is life , because of righteousness .

Before, he said the Spirit of God and Christ dwelt in them; here Christ himself. Christ dwells in Believers by his Spirit.

By body some understand the corrupt and unregenerate part in the godly, as if that were as good as dead in them. But others take the word in its proper signification, and think no more is meant thereby than that the Bodies even of Believers, are mortal Bodies; so they are called in the next verse. They are subject to death as the bodies of other men.

Some by Spirit here do understand the Spirit of God, and he is life; that is, he will quicken and raise up your bodies again to an immortal life. Others by Spirit do understand the Souls, yet not simply and absolutly considered, but as renewed by grace; that is life, or that doth live: it lives a life of Grace here, and it shall live a life of Glory hereafter.

By Righteousness, here understand, either imputed Righteousness, which gives us a right and title to Salvation; or inherent Righteousness, which is a necessary condition required in every Person, that shall indeed be saved. The Sum is, if you be Christians indeed, though your bodies dye, yet your Souls shall live, and that for ever; and your dead bodies shall not finally perish, but shall certainly be raised again; so it follows in the next verse.