The "coming of the Son of Man" features several things which I feel that you are missing. After all, the point of the redemption story is to do away with the following (in bold below):
And Paul was looking forward to the following:Rev. 21
1Then I saw a new heaven and a new earth; for the first heaven and the first earth passed away, and there is no longer any sea.
2And I saw the holy city, new Jerusalem, coming down out of heaven from God, made ready as a bride adorned for her husband.
3And I heard a loud voice from the throne, saying, “Behold, the tabernacle of God is among men, and He will dwell among them, and they shall be His people, and God Himself will be among them,
4and He will wipe away every tear from their eyes; and there will no longer be any death; there will no longer be any mourning, or crying, or pain; the first things have passed away.”
5And He who sits on the throne said, “Behold, I am making all things new.” And He said, “Write, for these words are faithful and true.”
20For our citizenship is in heaven, from which also we eagerly wait for a Savior, the Lord Jesus Christ;
21who will transform the body of our humble state into conformity with the body of His glory, by the exertion of the power that He has even to subject all things to Himself.
This means that all of the mortal bodies of the faithful must be transformed so as to be immortal as Jesus' body is now immortal. This is what Paul taught. Thus, the new heavens and new earth will consist of immortal people of faith on God--people of righteousness.
In other words, Paul was looking forward to the same thing that Peter was looking forward to:
Yep.II Pet. 3
10But the day of the Lord will come like a thief, in which the heavens will pass away with a roar and the elements will be destroyed with intense heat, and the earth and its works will be burned up.
11Since all these things are to be destroyed in this way, what sort of people ought you to be in holy conduct and godliness,
12looking for and hastening the coming of the day of God, because of which the heavens will be destroyed by burning, and the elements will melt with intense heat!
13But according to His promise we are looking for new heavens and a new earth, in which righteousness dwells.
In other words, Peter was looking forward to the absence of death, since the new heavens and new earth does not have death. After all, death will have been tossed in the second death by this point--and after it has been abolished by the resurrection of the dead into bodily immortality:
Does this make sense?I Cor. 15
50Now I say this, brethren, that flesh and blood cannot inherit the kingdom of God; nor does the perishable inherit the imperishable.
51Behold, I tell you a mystery; we will not all sleep, but we will all be changed,
52in a moment, in the twinkling of an eye, at the last trumpet; for the trumpet will sound, and the dead will be raised imperishable, and we will be changed.
53For this perishable must put on the imperishable, and this mortal must put on immortality.
this perishable will have put on the imperishable, and this mortal will have put on immortality,
will come about the saying that is written, “DEATH IS SWALLOWED UP in victory.
55“O DEATH, WHERE IS YOUR VICTORY? O DEATH, WHERE IS YOUR STING?”
56The sting of death is sin, and the power of sin is the law;
57but thanks be to God, who gives us the victory through our Lord Jesus Christ.
13And the sea gave up the dead which were in it, and death and Hades gave up the dead which were in them; and they were judged, every one of them according to their deeds.
14Then death and Hades were thrown into the lake of fire. This is the second death, the lake of fire.
15And if anyone’s name was not found written in the book of life, he was thrown into the lake of fire.