Revelation 21:13

“The city gates will be named after the tribes of Israel. On the north side, which is 4,500 cubits long, will be three gates: the gate of Reuben, the gate of Judah and the gate of Levi. On the east side, which is 4,500 cubits long, will be three gates: the gate of Joseph, the gate of Benjamin and the gate of Dan. On the south side, which measures 4,500 cubits, will be three gates: the gate of Simeon, the gate of Issachar and the gate of Zebulun. On the west side, which is 4,500 cubits long, will be three gates: the gate of Gad, the gate of Asher and the gate of Naphtali.”

Shares the idea of gates on each side of a city

“It had a great, high wall with twelve gates, and with twelve angels at the gates. On the gates were written the names of the twelve tribes of Israel.”

Immediately preceding verse; continues describing the gates of the city.

“The wall of the city had twelve foundations, and on them were the names of the twelve apostles of the Lamb.”

Immediately following verse; continues describing the city's structure.