Revelation 21:12-13

21:12 It has a massive, high wall with twelve gates, with twelve angels at the gates, and the names of the twelve tribes of the nation of Israel are written on the gates. 21:13 There are three gates on the east side, three gates on the north side, three gates on the south side and three gates on the west side.

Revelation 21:21

21:21 And the twelve gates are twelve pearls – each one of the gates is made from just one pearl! The main street of the city is pure gold, like transparent glass.

Revelation 21:25

21:25 Its gates will never be closed during the day (and there will be no night there).