Revelation 21:12-13
which has a great and high wall having twelve gates, and at the gates twelve agents, and names inscribed, which are the names of the twelve tribes of the sons of Israel:
Isaiah 26:1-2
In that day this song shall be sung in the land of Judah: We have a strong city. He will appoint salvation for walls and bulwarks.
Isaiah 54:12
And I will make thy pinnacles of rubies, and thy gates of carbuncles, and all thy border of precious stones.
Isaiah 60:11
Thy gates also shall be open continually. They shall not be shut day nor night, that men may bring to thee the wealth of the nations, and their kings led captive.
Revelation 21:21
And the twelve gates were twelve pearls apiece, each one of the gates was of one pearl. And the thoroughfare of the city was pure gold, like transparent glass.
Revelation 21:25
And the gates of it will, no, not be locked by day, for there will be no night there.