As for 1 Cor. 15:24-26 goes, here's what my bible says:
Then comes the end, when he hands over the kingdom to God the Father, after he has destroyed every ruler and every authority and power. For he must reign until he has put all his enemies under his feet. The last enemy to be destroyed is death.
That does not mean that physical death will be destroyed, as JWs believe.
It means there will be no more death since we will be raised in a spiritual body.
1 Cor 15:44 They are buried as natural human bodies, but they will be raised as spiritual bodies. For just as there are natural bodies, there are also spiritual bodies.
To me, and who am I but a layperson, this entire passage reeks of THE END, THE END.
To me this means the end, not the end of the world, but the end of the age.
Matthew 24-3
NIV
As Jesus was sitting on the Mount of Olives, the disciples came to him privately. “Tell us,” they said, “when will this happen, and what will be the sign of your coming and of the end of the age?”
NKJV
Now as He sat on the Mount of Olives, the disciples came to Him privately, saying, “Tell us, when will these things be? And what
will be the sign of Your coming, and of the end of the age?”
And the biblical passage is talking about the raising of the dead, and how central this belief is to Christianity.
1 Corinthians 15
New Living Translation
The Resurrection Body
35 But someone may ask, “How will the dead be raised? What kind of bodies will they have?” 36 What a foolish question! When you put a seed into the ground, it doesn’t grow into a plant unless it dies first. 37 And what you put in the ground is not the plant that will grow, but only a bare seed of wheat or whatever you are planting. 38 Then God gives it the new body he wants it to have. A different plant grows from each kind of seed. 39 Similarly there are different kinds of flesh—one kind for humans, another for animals, another for birds, and another for fish.
40 There are also bodies in the heavens and bodies on the earth. The glory of the heavenly bodies is different from the glory of the earthly bodies. 41 The sun has one kind of glory, while the moon and stars each have another kind. And even the stars differ from each other in their glory.
42 It is the same way with the resurrection of the dead. Our earthly bodies are planted in the ground when we die, but they will be raised to live forever. 43 Our bodies are buried in brokenness, but they will be raised in glory. They are buried in weakness, but they will be raised in strength. 44 They are buried as natural human bodies, but they will be raised as spiritual bodies. For just as there are natural bodies, there are also spiritual bodies.
45 The Scriptures tell us, “The first man, Adam, became a living person.”[
h] But the last Adam—that is, Christ—is a life-giving Spirit. 46 What comes first is the natural body, then the spiritual body comes later. 47 Adam, the first man, was made from the dust of the earth, while Christ, the second man, came from heaven. 48 Earthly people are like the earthly man, and heavenly people are like the heavenly man. 49 Just as we are now like the earthly man, we will someday be like[
i] the heavenly man.
50 What I am saying, dear brothers and sisters, is that our physical bodies cannot inherit the Kingdom of God. These dying bodies cannot inherit what will last forever.
51 But let me reveal to you a wonderful secret. We will not all die, but we will all be transformed! 52 It will happen in a moment, in the blink of an eye, when the last trumpet is blown. For when the trumpet sounds, those who have died will be raised to live forever. And we who are living will also be transformed. 53 For our dying bodies must be transformed into bodies that will never die; our mortal bodies must be transformed into immortal bodies.
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There is nothing in any of these verses about being raised back to life in a physical body which will continue to live on earth forever, as JWs believe.
But JWs just ignore these verses and continue believing what they believe because they want to live on earth forever in a physical body.
JWs believe that verses that say the meek will inherit the earth mean they will live on earth forever.
"These dying bodies cannot inherit what will last forever" is referring to heaven, which will last forever. It is not referring to earth.