Nigel, here is what the Bible says:
"For He must be reigning until He should be placing all His enemies under His feet." 1 Cor. 15:25
NOTE: Christ reigns "UNTIL," not "FOR EVER AND EVER," as Rev.11:15 erroneously states in the common MIS-translations. The Greek original reads "τοὺς αἰῶνας τῶν αἰώνων" which litterally translated is "unto the eons of the eons." The expression "eons of the eons" may be difficult to understand at first but it is no more difficult than "Lord of lords," "Holy of Holies," or "Holies of Holies." Christ is called "Lord of lords" in the Scriptures. He may also be called "Son of sons," "Prophet of prophets" so "that in all He may be becoming first" (Col. 1:18). Same principle applies here... the "eons of the eons" are the two most important eons of the eons created by God (Heb. 1:2). NO, it's not "world", "worlds," or "universe," as the common MIS-translations have it, but EONS (Gr. " αἰῶνας"). By the way, if you want to see further evidence of the BUTCHERING of the Word of God, witness this translation of the Greek "πάντα ἐν πᾶσιν" (All in all). The NLT ("New Living Translation") has these words "God... will be utterly supreme over everything everywhere." So, tell me Nigel, is this this the Word of God, or is it personal opinion?
After "nullifying all sovereignty and all authority and power" (v.24) Christ abolishes the LAST enemy - DEATH (v.26) - and is "giving up the kingdom to His God and
Father (v,24).
NOTES:
The death in view here is the SECOND DEATH, i.e. the LAKE OF FIRE. (Rev. 20:14b) as it is the ONLY death still in operation at this time. The FIRST DEATH, as well as the UNSEEN (Gr. "Hades") were previously thrown into THE LAKE OF FIRE (v.14a)
Christ is giving up the perfected Kingdom "TO HIS GOD AND FATHER." Now, all Christians know that Jesus has a Father, but how many know that He also has a God?
"Now, whenever all may be subjected to Him, then the Son Himself also shall be subjected to Him Who subjects all to Him, that God may be All in all. (v.28)
Nigel, you are correct: One should refrain from making statements which represent personal opinion and should instead study to Word of God - DILIGENTLY AND IN ITS ORIGINAL LANGUAGES. And only then will one be properly equipped to boldly proclaim a loving "God, Who conciliates us to Himself through Christ, and is giving us the dispensation of the conciliation, how that God was in Christ, conciliating the world to Himself, not reckoning their offenses to them, and placing in us the word of the conciliation."(2 Cor. 5:18-19) This is what those who are "ambassadors for Christ" (v.20) do. I hope that you will follow suit.