Revelation 21:13
There were three gates on the east, three gates on the north, three gates on the south, and three gates on the west.
Ezekiel 48:31-34
                            
Treasury of Scripture Knowledge
Summary
                            On the east three gates; on the north three gates; on the south three gates; and on the west three gates.                        
                    General references
Bible References
General references
                                        Ezekiel 48:31                                         there will be three gates facing north, the gates of the city being named for the tribes of Israel: one, the gate of Reuben; one, the gate of Judah; and one, the gate of Levi.