Revelation 21

12 having also a wall great and high, having twelve gates, and at the gates twelve messengers, and names written thereon, which are [those] of the twelve tribes of the sons of Israel,

13 at the east three gates, at the north three gates, at the south three gates, at the west three gates;

14 and the wall of the city had twelve foundations, and in them names of the twelve apostles of the Lamb.