1 Corinthians 15:28

“And when all things shall be subdued unto him, etc.] For all things as yet are not put under him in fact; though in right God the Father has given to him an authoritative power over all things, and a right to dispose of them at his pleasure; but all things are not actually and in their full extent subject to him, yet they will be when the last enemy is destroyed: and then shall the Son also himself be subject unto him that put all things under him; which must be interpreted and understood with great care and caution; not in the Sabellian sense, of refunding of the characters of the Son, and so of the Father unto God; when they suppose these characters, which they imagine to be merely…”

“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 Zac 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…”

“And when ... - In this future time, when this shall be accomplished. This implies that the time has not yet arrived, and that his dominion is now exercised, and that he is carrying forward his plans for the subjugation of all things to God. Shall be subdued unto him - Shall be brought under subjection. When all his enemies shall be overcome and destroyed; or when the hearts of the redeemed shall be entirely subject to God. When God’s kingdom shall be fully established over the universe. It shall then be seen that he is Lord of all. In the previous verses he had spoken of the promise that all things should be subjected to God; in this, he speaks of its being actually done. Then shall the Son…”

“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. 1 Corinthians 15:29”

“all things: Psa 2:8, Psa 2:9, Psa 18:39, Psa 18:47, Psa 21:8, Psa 21:9; Dan 2:34, Dan 2:35, Dan 2:40-45; Mat 13:41-43; Phi 3:21; Rev 19:11-21, Rev 20:2-4, Rev 20:10-15 then: Co1 3:23, Co1 11:3; Joh 14:28 all in all: Co1 12:6; Eph 1:23; Col 3:11 1 Corinthians 15:29”