Here is what the Biblically illiterate are missing in their Bible study about the events of Christ's coming and shortly thereafter, and why it seems to them that I'm speaking some foreign language they cannot understand. It's because they have failed... to study their whole Bible, especially details for after Christ's future return first written in the Old Testament prophets.
First this...
Rev 22:14-15
14 Blessed are they that do His commandments, that they may have right to the tree of life, and may enter in through the gates into the city.
15 For without are dogs, and sorcerers, and whoremongers, and murderers, and idolaters, and whosoever loveth and maketh a lie.
KJV
Even though that Revelation 22 Chapter starts off declaring the return of God's River of the Waters of Life, and the Tree of Life, those above 14-15 verses actually point to the time of Christ's Revelation 20 reign over the UNSAVED whose place will be outside... the gates of that city (future Jerusalem on earth).
How can we know those wicked are outside the gates of the beloved city in that time when God's River and the Tree of Life are manifested back on earth?
It is because that was originally written of in the Ezekiel 40 through 47 Chapters, which is for after Christ's 2nd coming, i.e., the time of Christ's future Millennial reign over the unsaved nations with His elect. Ezekiel 47 specifically reveals Christ's future Millennial "sanctuary" on earth from which God's River flows out from underneath the Altar, healing waters upon this earth that comes in contact with it. And on either side of that River shown there are the many trees bearing their fruits with the leaves as medicine, which is a direct link to the Revelation 22:1-2 Scripture. That Ezekiel 47 Chapter even reveals God's River at that future time will flow even unto the holy land areas of En-gedi unto En-eglaim, ON EARTH.
Per Ezekiel 44, Christ's elect priests, called then the Zadok (means The Just), will be allowed to go outside the beloved city to a 'dead' relative. Thing is for that future Millennium time, the idea of still being 'dead' means SPIRITUALLY dead, one's soul still being subject to the "second death" of being cast into the "lake of fire" at the end of Christ's "thousand years" reign. That Ezekiel 44 Chapter reveals the job of Christ's future priests will be to teach God's people the difference between the holy and the profane, and the clean and the unclean. And the unsaved then will stand throughout that period in judgment, pointing to the unsaved being subject to the "second death" for that period.
And according to Zechariah 6 about "The BRANCH", which is another Title for Lord Jesus Christ back in The Old Testament, it says that He.(Jesus) ... is to build the temple of The LORD, meaning when He returns. It means a LITERAL stone "sanctuary" on earth, the one which Ezekiel described on earth in the holy land which has never... yet been built. This was prophesied also in the Book of Daniel, about the cleansing of the sanctuary event after the 2300 days (Daniel 8:13-14).
All of that was given in Old Testament Books of God's prophets, evidently Bible Scripture which many of my Christian brethren have failed to study. Too bad, because it helps keep us straight as to future prophetic events about Lord Jesus' future reign and Kingdom to manifest on earth at His 2nd coming. It prevents men's loose tongues with false speculation of spiritual temples up in the sky, floating on clouds, and such silly dreams by the Biblically illiterate who refuse to study all their Bible. And for those who have... taken the time to study these things from Old Testament Scripture, we well understand how it is the Biblically illiterate get sucked into all sorts of fake religious theories and such by those who preach as a business, and don't really care that they make up stories, as long as they get a paycheck.
That God's River of the Waters of Life, and the Tree of Life, are mentioned at the start of the Revelation 22 Chapter, many try to use the Book of Revelation like all the Chapters follow in order how they will happen. Those Revelation 22:14-15 verses ought to throw those for a loop who believe that all events in Revelation are in chronological order. What those Rev.22:14-15 verses about the wicked being outside the gates of the city, while Christ's elect have right to the Tree of Life that will be inside those gates, reveals God's new heavens and a new earth time, right? No, because the wicked are still there, not cast into the "lake of fire" yet. Only once the devil, the wicked, the abode of hell, and even death, go into the future "lake of fire", only then will God's Eternity of the new heavens and a new earth will begin.
Thus the establishing of God's River and the Tree of Life on earth, along with Christ's future Millennial temple on earth in the holy land, will still not be the new heavens and a new earth time. Rev.21 tells us when the new heavens and a new earth time comes, there will be no more temple. So that's another clue when God's new heavens and a new earth time will manifest.