Aner and Bileam are mentioned in Chronicles, instead of Tanach and Gath-rimmon - 1Ch 6:70. Either the cities had at this time different names, or afterwards their names were changed; or the Levites, being by some means dispossessed of the cities first assigned them, received others from their brethren. A careful examination of the marginal references will discover other variations of this kind, which may be accounted for in the same manner.
Tanach: Jos 17:11, Jdg 5:19
Reciprocal: Jdg 1:27 - Taanach 1Ch 6:69 - Gathrimmon