The Gershonite clans received thirteen cities and their grazing areas.

Solomon took thirteen years to build his palace. ¹ 

his son Ishmael was thirteen years old ¹  when he was circumcised.

Beth Lebaoth, and Sharuhen – a total of thirteen cities and their towns,

The priests descended from Aaron received thirteen cities and their grazing areas.

the second Hilkiah, the third Tebaliah, and the fourth Zechariah. All of Hosah’s sons and relatives numbered thirteen.

The clans of Gershom’s descendants received thirteen cities within the territory of the tribes of Issachar, Asher, Naphtali, and Manasseh (in Bashan). ¹ 

You must offer a burnt offering, an offering made by fire as a pleasing aroma to the Lord: thirteen young bulls, two rams, and fourteen lambs each one year old, all of them without blemish.

Their grain offering must be of finely ground flour mixed with olive oil, three-tenths of an ephah for each of the thirteen bulls, two-tenths of an ephah for each of the two rams,

The first lot belonged to ¹  the Kohathite clans. The Levites who were descendants of Aaron the priest were allotted thirteen cities from the tribes of Judah, Simeon, and Benjamin.

Gershon’s descendants were allotted thirteen cities from the clans of the tribe of Issachar, and from the tribes of Asher and Naphtali and the half-tribe of Manasseh in Bashan.

Within the territory of the tribe of Benjamin they were allotted ¹  Geba and its pasturelands, Alemeth and its pasturelands, and Anathoth and its pasturelands. Their clans were allotted thirteen cities in all.

Only King Og of Bashan was left of the remaining Rephaites. (It is noteworthy ¹  that his sarcophagus ²  was made of iron. ³  Does it not, indeed, still remain in Rabbath ⁴  of the Ammonites? It is thirteen and a half feet ⁵  long and six feet ⁶  wide according to standard measure.) ⁷