Revelation 21:22–27 (NKJV)
The description of the New Jerusalem’s foundations, gates, and streets leads then to a further description of the city’s interior concerning the temple, the light, and the security of the city.
22 But I saw no temple in it, for the Lord God Almighty and the Lamb are its temple. 23 The city had no need of the sun or of the moon to shine in it, for the glory of God illuminated it. The Lamb is its light. 24 And the nations of those who are saved shall walk in its light, and the kings of the earth bring their glory and honor into it.Revelation 21:22-24
In this passage, John saw that there was no actual temple in the city. The temple was not needed, for the Lord God Almighty and the Lamb are present everywhere in the city, and they serve as its temple. The city also does not need the sun or the moon to shine in it, for the glory of the Lord illuminates its every corner. The Lamb is the light. All the nations that are saved walk in the light of the city, and the kings of the earth will bring their glory and honor into it. Those who are saved come into the city and worship in the presence of the Lord, and they walk in His light. They bring their glory to Him out of respect, like kings laying their crowns at His feet. This great place brings all to the humble worship of the Lord.
25 Its gates shall not be shut at all by day (there shall be no night there). 26 And they shall bring the glory and the honor of the nations into it. 27 But there shall by no means enter it anything that defiles, or causes an abomination or a lie, but only those who are written in the Lamb’s Book of Life.Revelation 21:25-27
The cities gates are never shut, all day. There will be no night, because the Lamb is the light at all times. Again, he records that all will bring their glory and honor into the city. However, nothing will enter the city that defiles, that creates an abomination or a lie. Only those written in the Lamb’s Book of Life will be allowed to enter. This place is glorious, bright, and holy. It is reserved for those who are saved. It is exclusive in many ways. God does not arbitrarily exclude souls from heaven, but those who respond to His drawing will be saved. The Lord draws individuals to salvation, but the drawn must respond in faith to be saved. This beautiful, glorious place is an ultimate destination for those who desire a relationship with God and the privilege to live with Him for eternity.