The entrance to New Jerusalem is the death and resurrection of Christ. Revelation 21:21 uses pearl as the spiritual symbol for this entrance—“And the twelve gates were twelve pearls; each one of the gates was, respectively, of one pearl.”
Revelation 21:25 says of New Jerusalem, “its gates shall by no means be shut by day, for there will be no night there.” Despite the twelve open gates, no proclamation of the gospel and no invitation to enter the city is mentioned in Revelation 21–22. The time for proclaiming and receiving the gospel is now, beginning from the appearance of John the Baptist (Mark 1). This time of proclaiming and receiving continues through this age. At the end of Matthew 28 the Lord charges us to go and disciple the nations, baptizing and teaching them. He concludes His charge by promising, “I am with you all the days until the consummation of the age.” He will be with us for eternity, but here He is speaking particularly about being with us in the gospel, so He says “until the consummation of the age.”
Our receiving of the crucified and resurrected Jesus is our entering into New Jerusalem. Through His death all the negative things that would keep us out of the city have been removed. Through His resurrection we receive the eternal life that is the life of New Jerusalem and we are brought into the Triune God.
Now is the time to enter! If you haven’t received Jesus before, you can now. Declare to the resurrected Jesus, Lord, thank You for dying and resurrecting for me. Thank you for removing all the obstacles and cleansing me. Please come into me and make me alive with Yourself. I want to begin experiencing New Jerusalem.