Albert Barnes Commentary Romans 8:30

"and whom he foreordained, them he also called: and whom he called, them he also justified: and whom he justified, them he also glorified." — Romans 8:30 (ASV)

Moreover. In this verse, to show Christians the true consolation to be derived from the fact that they are predestined, the Apostle states the connection between that predestination and their certain salvation. The one implied the other.

Whom he did predestinate. All whom He predestined.

Them he also called. Called by His Spirit to become Christians. He called, not merely by an external invitation, but in such a way that they, in fact, were justified. This cannot refer simply to an external call of the gospel, since those who are here said to be called are also said to be justified and glorified. The meaning is that there is a certain connection between predestination and the call, which will be manifested in due time. The connection is so certain that the one infallibly secures the other.

He justified. (See notes on Romans 3:24). Not that He justified them from eternity, for this was not true; and if it were, it would also follow that He glorified them from eternity, which would be an absurdity. It means that there is a regular sequence of events—predestination precedes and secures the calling, and the calling precedes and secures justification. The one is connected in the purpose of God with the other; and the one, in fact, does not take place without the other. The purpose was in eternity; the calling and justifying in time.

Them he also glorified. This probably refers to heaven. It means that there is a connection between justification and glory. The one does not exist without the other in its own proper time, just as the calling does not subsist without the act of justification. This proves, therefore, the doctrine of the perseverance of the saints. There is an infallible and ever-existing connection between predestination and final salvation. Those who are subjects of the one are partakers of the other. That this is the sense is clear:

1. Because it is the natural and obvious meaning of the passage.
2. Because this only would meet the design of the argument of the Apostle. For how would it be a source of consolation to say to them that whom God foreknew He predestined, and whom He predestined He called, and whom He called He justified, and whom He justified might fall away and be lost forever?