Command the children of Israel, that they give unto the (a) Levites of the inheritance of their possession (b) cities to dwell in; and ye shall give [also] unto the Levites suburbs for the cities round about them.
(a) Because they had no inheritance assigned them in the land of Canaan.
(b) God would have them scattered through all the land, because the people might be preserved by them in the obedience of God and his Law.