Romans 8:10

“And if Christ be in you, etc..] Not as he is in the whole world, and in all his creatures, or circumscriptively, and to the exclusion of himself elsewhere; for his person is above in heaven, his blood is within the vail, his righteousness is upon his people, and his Spirit and grace are in them; and so he comes to be in them, he is formed in their hearts by the Spirit of God in regeneration, when the Father reveals him not only to them, but in them; and he himself enters and takes possession of them as his own, manifests himself to them, communicates his grace, and grants them communion with him. This being their case, the body is dead because of sin: by which is meant, not the body of sin,…”

“And if Christ be in you--by His indwelling Spirit in virtue of which we have one life with him. the body--"the body indeed." is dead because of--"by reason of" sin; but the spirit is life because--or, "by reason" of righteousness--The word "indeed," which the original requires, is of the nature of a concession--"I grant you that the body is dead . . . and so far redemption is incomplete, but," &c.; that is, "If Christ be in you by His indwelling Spirit, though your 'bodies' have to pass through the stage of 'death' in consequence of the first Adam's 'sin,' your spirit is instinct with new and undying 'life,' brought in by the 'righteousness' of the second Adam" [THOLUCK, MEYER, and ALFORD in…”

“And if Christ be in you - This is evidently a figurative expression, where the word “Christ” is used to denote his spirit, his principles; that is, he influences the man. Literally, he cannot be in a Christian; but the close connection between him and Christians, and the fact that they are entirely under his influence, is expressed by this strong figurative language. It is language which is not infrequently used; compare Galatians 2:20; Colossians 1:27. (The union between Christ and his people is sometimes explained of a merely relative in opposition to a real union. The union which subsists between a substitute, or surety, and the persons in whose room he has placed himself, is frequently…”

“Now if Christ be in you - Where the Spirit of Christ is, there is Christ. The body indeed is dead - Devoted to death. Because of sin - Heretofore committed. But the Spirit is life - Already truly alive. Because of righteousness - Now attained. From Rom 8:13, St. Paul, having finished what he had begun, Rom 6:1, describes purely the state of believers. Romans 8:12”

“8:10 the Spirit gives you life: The Spirit opposes sin (which leads to physical death) and brings resurrection from the dead.”

“if Christ: Joh 6:56, Joh 14:20, Joh 14:23, Joh 15:5, Joh 17:23; Co2 13:5; Eph 3:17; Col 1:27 the body: Rom 8:11, Rom 5:12; Co2 4:11, Co2 5:1-4; Th1 4:16; Heb 9:27; Pe2 1:13, Pe2 1:14; Rev 14:13 but: Joh 4:14, Joh 6:54, Joh 11:25, Joh 11:26, Joh 14:19; Co1 15:45; Co2 5:6-8; Phi 1:23; Col 3:3, Col 3:4; Heb 12:23; Rev 7:14-17 life: Rom 5:21; Co2 5:21; Phi 3:9 Romans 8:11”