1 Corinthians 15:24-28

After that comes the end (completion), when He hands over the kingdom to God the Father, after He has made inoperative and abolished every ruler and every authority and power. For Christ must reign [as King] until He has put all His enemies under His feet. [Ps 110:1] The last enemy to be abolished and put to an end is death. For HE (the Father) HAS PUT ALL THINGS IN SUBJECTION UNDER HIS (Christ’s) FEET. But when He says, “All things have been put in subjection [under Christ],” it is clear that He (the Father) who put all things in subjection to Him (Christ) is excepted [since the Father is not in subjection to His own Son]. [Ps 8:6] However, when all things are subjected to Him (Christ), then the Son Himself will also be subjected to the One (the Father) who put all things under Him, so that God may be all in all [manifesting His glory without any opposition, the supreme indwelling and controlling factor of life].