He gave, i.e. Joshua, as appears by comparing this with Joshua 14:6,12,13. Arba, or Kirjath-arba; not the city, which was the Levites, but the territory of it, Joshua 21:13.
Related Commentaries of Joshua 15:13
Joshua 15:13
13 And unto Caleb the son of Jephunneh he gave a part among the children of Judah, according to the commandment of the LORD to Joshua, even the cityb of Arba the father of Anak, which city is Hebron.