Revelation 21: 10 - 14, 22 - 23
10 And in the Spirit he carried me away to a great, high mountain, and showed me the holy city Jerusalem coming down out of heaven from God,
11 having the glory of God, its radiance like a most rare jewel, like a jasper, clear as crystal.
12 It had a great, high wall, with twelve gates, and at the gates twelve angels, and on the gates the names of the twelve tribes of the sons of Israel were inscribed;
13 on the east three gates, on the north three gates, on the south three gates, and on the west three gates.
14 And the wall of the city had twelve foundations, and on them the twelve names of the twelve apostles of the Lamb.
22 And I saw no temple in the city, for its temple is the Lord God the Almighty and the Lamb.
23 And the city has no need of sun or moon to shine upon it, for the glory of God is its light, and its lamp is the Lamb.

EWTN