1 Corinthians 15:25

25.For he must reign He proves that the time is not yet come when Christ will deliver up the kingdom to the Father, with the view of showing at the same time that the end has not yet come, when all things will be put into a right and tranquil state, because Christ has not yet subdued all his enemies. Now that must be brought about, because the Father has placed him at his right hand with this understanding, that he is not to resign the authority that he has received, until they have been subdued under his power. And this is said for the consolation of the pious, that they may not be impatient on account of the long delay of the resurrection. This statement occurs in Psalms 110:1

Paul, however, may seem to refine upon the word until beyond what the simple and natural meaning of the word requires; for the Spirit does not in that passage give intimation of what shall be afterwards, but simply of what must be previously. I answer, that Paul does not conclude that Christ will deliver up the kingdom to the Father, on the ground of its having been so predicted in the Psalm, but he has made use of this quotation from the Psalm, for the purpose of proving that the day of delivering up the kingdom had not yet arrived, because Christ has still to do with his enemies. Paul, however, explains in passing what is meant by Christ’s sitting at the right hand of the Father, when in place of that figurative expression he makes use of the simple word reign.

The last enemy — death We see that there are still many enemies that resist Christ, and obstinately oppose his reign. But death will be the last enemy (54) that will be destroyed. Hence Christ must still be the administrator of his Father’s kingdom. Let believers, therefore, be of good courage, and not give up hope, until everything that must precede the resurrection be accomplished. It is asked, however, in what sense he affirms that death shall be the last enemy (55) that will be destroyed, when it has been already destroyed by Christ’s death, or at least, by his resurrection, which is the victory over death, and the attainment of life? I answer, that it was destroyed in such a way as to be no longer deadly to believers, but not in such a way as to occasion them no uneasiness. The Spirit of God, it is true, dwelling in us is life; but we still carry about with us a mortal body. (1 Peter 1:24.) The substance of death in us will one day be drained off, but it has not been so as yet. We are born again of incorruptible seed, (1 Peter 1:23,) but we have not yet arrived at perfection. Or to sum up the matter briefly in a similitude, the sword of death which could penetrate into our very hearts has been blunted. It wounds nevertheless still, but without any danger; (56) for we die, but by dying we enter into life. In fine, as Paul teaches elsewhere as to sin, (Romans 6:12,) such must be our view as to death — that it dwells indeed in us, but it does not reign