And when all things shall be subdued unto him, {m} then shall the Son also himself be subject unto him that put all things under him, that {n} God may be all in all.

(m) Not because the Son was not subject to his Father before, but because his body, that is to say, the Church which is here in distress, and not yet wholly partaker of his glory, is not yet fully perfect: and also because the bodies of the saints which are in the graves, will not be glorified until the resurrection. But Christ as he is God, has us subject to him as his Father has, but as he is Priest, he is subject to his Father together with us. Augustine, book 1, chap. 8, of the trinity.

(n) By this high type of speech is set forth an incomprehensible glory which flows from God, and will fill all of us, as we are joined together with our head, but yet in such a way that our head will always preserve his preeminence.

People's New Testament

15:28 When all things shall be subdued unto him. When the world is subdued to Christ.

Then shall the Son also himself be subject unto him. Then, as his work is done, he will give up the kingdom to the Father (1Co 15:24). Then Christ will give up the seals of office.

Wesley's Notes

15:28 The Son also shall be subject - Shall deliver up the mediatorial kingdom. That the three - one God may be all in all - All things, (consequently all persons,) without any interruption, without the intervention of any creature, without the opposition of any enemy, shall be subordinate to God. All shall say, My God, and my all. This is the end. Even an inspired apostle can see nothing beyond this.

Jamieson-Fausset-Brown Bible Commentary

28. Son . himself . subject-not as the creatures are, but as a Son voluntarily subordinate to, though co-equal with, the Father. In the mediatorial kingdom, the Son had been, in a manner, distinct from the Father. Now, His kingdom shall merge in the Father's, with whom He is one; not that there is thus any derogation from His honor; for the Father Himself wills "that all should honor the Son, as they honor the Father" (Joh 5:22, 23; Heb 1:6).

God . all in all-as Christ is all in all (Col 3:11; compare Zec 14:9). Then, and not till then, "all things," without the least infringement of the divine prerogative, shall be subject to the Son, and the Son subordinate to the Father, while co-equally sharing His glory. Contrast Ps 10:4; 14:1. Even the saints do not fully realize God as their "all" (Ps 73:25) now, through desiring it; then each shall feel, God is all to me.

Matthew Henry's Concise Commentary

15:20-34 All that are by faith united to Christ, are by his resurrection assured of their own. As through the sin of the first Adam, all men became mortal, because all had from him the same sinful nature, so, through the resurrection of Christ, shall all who are made to partake of the Spirit, and the spiritual nature, revive, and live for ever. There will be an order in the resurrection. Christ himself has been the first-fruits; at his coming, his redeemed people will be raised before others; at the last the wicked will rise also. Then will be the end of this present state of things. Would we triumph in that solemn and important season, we must now submit to his rule, accept his salvation, and live to his glory. Then shall we rejoice in the completion of his undertaking, that God may receive the whole glory of our salvation, that we may for ever serve him, and enjoy his favour. What shall those do, who are baptized for the dead, if the dead rise not at all? Perhaps baptism is used here in a figure, for afflictions, sufferings, and martyrdom, as Mt 20:22,23. What is, or will become of those who have suffered many and great injuries, and have even lost their lives, for this doctrine of the resurrection, if the dead rise not at all? Whatever the meaning may be, doubtless the apostle's argument was understood by the Corinthians. And it is as plain to us that Christianity would be a foolish profession, if it proposed advantage to themselves by their faithfulness to God; and to have our fruit to holiness, that our end may be everlasting life. But we must not live like beasts, as we do not die like them. It must be ignorance of God that leads any to disbelieve the resurrection and future life. Those who own a God and a providence, and observe how unequal things are in the present life, how frequently the best men fare worst, cannot doubt as to an after-state, where every thing will be set to rights. Let us not be joined with ungodly men; but warn all around us, especially children and young persons, to shun them as a pestilence. Let us awake to righteousness, and not sin.