1 Chronicles 6:81

and Heshbon with her suburbs, and Jazer with her suburbs. "As to these cities that were assigned to the Levites, they were widely remote and separated partly in fulfilment of Jacob's prophecy, Genesis 49:7, and partly that the various districts of the country might obtain a competent supply of teachers, who might instruct the people in the knowledge and animate them to the observance of a law which had so important a bearing on the promotion both of their private happiness and their national prosperity. "