Joshua 21:10

10 and the first lot was of the sons of Aaron, of the family of Kohath, of the sons of Levi;

Joshua 21:10 Meaning and Commentary

Joshua 21:10

Which the children of Aaron, [being] of the families of the
Kohathites
Who descending from Kohath, in the line of Aaron, were priests:

[who were] of the children of Levi, had;
they were Levites, as descending from Levi, but were priests also, as being of the stock of Aaron, and the cities hereafter mentioned in the said tribe fell to their portion:

for theirs was the first lot;
for being of the line of Aaron, and priests, they had the honour and privilege to have the first lot drawn for them, and out of the tribe for which the first lot was also drawn, the tribe of Judah; here they had their cities allotted them, for a reason before given.

Joshua 21:10 In-Context

8 Thus the sons of Israel gave by lot unto the Levites these cities with their suburbs, as the LORD had commanded by the hand of Moses.
9 And they gave out of the tribe of the sons of Judah and out of the tribe of the sons of Simeon these cities which are here mentioned by name;
10 and the first lot was of the sons of Aaron, of the family of Kohath, of the sons of Levi;
11 and they gave them the city of Arba of the father of Anak, which is Hebron, in the mountain of Judah, with its suburbs round about.
12 But the fields of the city and the villages thereof, they gave to Caleb the son of Jephunneh for his possession.
The Jubilee Bible (from the Scriptures of the Reformation), edited by Russell M. Stendal, Copyright © 2000, 2001, 2010