Cross reference
Revelation 21:13
13 On the east were three gates; and on the north three gates; and on the south three gates; and on the west three gates.
Ezekiel 48:31-34
31 and the gates of the city shall be after the names of the tribes of Israel, three gates northward: the gate of Reuben, one; the gate of Judah, one; the gate of Levi, one.
32 At the east side four thousand and five hundred [reeds], and three gates: even the gate of Joseph, one; the gate of Benjamin, one; the gate of Dan, one.
33 At the south side four thousand and five hundred [reeds] by measure, and three gates: the gate of Simeon, one; the gate of Issachar, one; the gate of Zebulun, one.
34 At the west side four thousand and five hundred [reeds], with their three gates: the gate of Gad, one; the gate of Asher, one; the gate of Naphtali, one.