Revelation 21:12-13

12The city had a very big, high wall round it. The wall had 12 gates in it. 12 angels stood at the 12 gates. The names of the 12 tribes of Israel's people were written on the 12 gates.

13There were three gates on each side of the city: three gates were on the east side, three gates were on the north side, three gates were on the south side, three gates were on the west side.