I Corinthians 15:25-28

For He must reign till He has put all enemies under His feet. The last enemy that will be destroyed is death. For “He has put all things under His feet.” But when He says “all things are put under Him,” it is evident that He who put all things under Him is excepted. Now when all things are made subject to Him, then the Son Himself will also be subject to Him who put all things under Him, that God may be all in all.