The new Jerusalem is not Christianity

The new Jerusalem is Christ, not Christianity. Even Christians will have to come out of Christianity to Christ. They will be left behind if they decline to do so.

Although a man might have been a devout Christian all his life, he will not enter into the holy city if he doesn't come out of Christianity to Christ. If he prefers Christianity to universal or boundless love, that choice will prevent him from entering into the new Jerusalem.

"If you love only the people who love you, why should you receive a blessing?" (Luke 6:32)

"Love your enemies and do good to them; lend and expect nothing back. You will then have a great reward, and you will be children of the Most High God. For he is good to the ungrateful and the wicked." (Luke 6:35)

Love is the holiest part of every group, society, nation and thing. First it unites all the people in a group, then it binds together different groups to form only one indivisible group.

Protestantism is a group like Catholicism is a group. Love between Catholics is the Holy of Holies of the Catholic Church like love between Protestants is the Holy of Holies of the Protestant Church.

Similarly, love between Christians is the Holy of Holies of Christianity like love between Muslims is the Holy of Holies of Islam. Further more, love between Hindus is the Holy of Holies of Hinduism just as love between Taoists is the Holy of Holies of Taoism.

The cohesive love between Jews is the Holy of Holies of Judaism.

That selfless love uniting people to form a unified group and diverse groups of people to form one humanity is Christ. The love of Christ has no limitations. It is found even in Atheism. It binds different denominations together to form one denomination,  different religions to form one religion, and Atheists and Theists to form one humanity.

Mormons are Mormons and Catholics are Catholics. What makes Mormons Mormons are the different religious rules defining Mormonism and what makes Catholics Catholics is the unique Catholic doctrine. Although Catholicism and Mormonism differ by laws governing the two institutions, they are united by the love of God. And that love is the Holy of Holies between Catholicism and Mormonism. And any Mormon that is able to come from Mormonism to this Holy of Holies has began a journey from Mormonism to God. And any Catholic that is able to come out of Catholicism to this Holy of Holies is on his way to the new Jerusalem.

An Atheist could enter into the new Jerusalem while a Christian could be locked out if the Christian is limited by Church teachings.

The foundation stone is the Axis Mundi because it is the rock of all ages holding humanity together. At the Temple Mount where the foundation stone is all continents are united to form only one continent and the whole world is one country governed by only one king. We are all Israelites and God is our king if we put our differences aside and uphold the love that binds us together.