13 On the east three gates; on the north three gates; on the south three gates; and on the west three gates.
Revelation 21:13 Cross References - Webster
Ezekiel 48:31-34
31 And the gates of the city shall be after the names of the tribes of Israel: three gates northward; one gate of Reuben, one gate of Judah, one gate of Levi.
32 And at the east side four thousand and five hundred: and three gates; one gate of Joseph, one gate of Benjamin, one gate of Dan.
33 And at the south side four thousand and five hundred measures: and three gates; one gate of Simeon, one gate of Issachar, one gate of Zebulun.
34 And the west side four thousand and five hundred, with their three gates: one gate of Gad, one gate of Asher, one gate of Naphtali.