New Jerusalem, as the consummation of all the positive matters in the Bible, will be the eternal fulfillment of the mutual abiding presented in John 15:4: “Abide in Me and I in you.”
Revelation 21:22 says of New Jerusalem, “the Lord God the Almighty and the Lamb are its temple.” In New Jerusalem, God and the Lamb are the temple and also our dwelling place. In Revelation 3:12 the Lord Jesus declares, “He who overcomes, him I will make a pillar in the temple of My God, and he shall by no means go out anymore…”
The pillar is in the temple, and the temple is God and the Lamb. This shows that the overcoming believers are pillars built into the Triune God. Being built in, they “shall by no means go out” because God is their eternal dwelling place.
Being built into God is not only in the future; it is the pattern of all the building described in the New Testament. The facts that 1) God and the Lamb are the living temple of New Jerusalem and 2) believers can be pillars in this temple both show that New Jerusalem is not a physical city but rather a living composition of God and God’s people.
The second part of Revelation 3:12 tells us that the name of God, the name of New Jerusalem, and the name of the Lord (the holy and true One, v. 7) are written on the believer who is a pillar. This shows that such a believer is possessed by the Triune God and by New Jerusalem. This is like an object on which our name is written to show that it is ours. We can pray, Lord, possess me wholly for Yourself and possess me for Your city.