If anyone reading this is already a Christian she or he has a destiny and destination in New Jerusalem.
Among
some of the believers participating Grampy Bobby, RJHinds, FreakyKBH, Suzzanne, RBHILL, myself (sonship) and others
whom we may know or do not know, but are indwelt with the Holy Spirit. We are all a part of that New Jerusalem. And our destiny is that holy city. There may be some who are saved by regeneration and are unclear about this. They too have New Jerusalem as their destiny.
There may be some believers in Christ who are backslidden. If they ever were regenerated they have no choice but also be a part
eventually of the New Jerusalem. Don't worry about it. They may lose the kingdom reward but they will not lose the blessings of eternity in New Jerusalem.
If you genuinely were regenerated at one time and received the Spirit of Jesus Christ and are presently in some deep controversy against your heavenly Father and even speak like you have renounced the faith, you have no choice. You too have your destiny in New Jerusalem after God is finished dealing with you. He has a lot of time to do that.
If you have in ways unknown to any of us, received Christ somehow into your innermost spirit, you will be a part of that New Jerusalem.
Whether known by Christians or not known by Christians - God KNOWS those who have received His Spirit. Their destiny is New Jerusalem.
If some unbeliever receives Jesus today, or tomorrow, or next month, or in coming years they too will be a part of the New Jerusalem.
So when you read
Revelation 21 and 22 and you are a saved person, you are definitely reading about yourself one day. When John says that he saw the New Jerusalem it means that he saw every saved person there.
Footenote 21(1) [Recovery Version Bible] on Revelation 21:1 continued, my bolding:
In both the Old Testament and the New Testament, God likens His chosen people to a spouse (Isa. 54:6; Jer. 3:1; Ezek. 16:8; Hosea 2:19; 2 Cor. 11:2; Eph. 5:31-32) and a dwelling place for Himself (Exo. 29:45; Num. 5:3; Ezek. 43:7,9; Psa. 68:18; 1 Cor. 3:16-17; 6:19; 2 Cor. 6:16; 1 Tim. 3:15). The spouse is for His satisfaction in love, and the dwelling place is for His rest in expression. Both of these aspects will be ultimately consummated in the New Jerusalem. In her, God will have the fullest satisfaction in love and the utmost rest in expression for eternity.