Deuteronomy 4:44

41 Then Moses had three towns marked out on the far side of Jordan looking to the east;

42 To which anyone causing the death of his neighbour in error and not through hate, might go in flight; so that in one of these towns he might be kept from death:

43 The names of the towns were Bezer in the waste land, in the table-land, for the Reubenites; and Ramoth in Gilead for the Gadites; and Golan in Bashan for Manasseh.

44 This is the law which Moses put before the children of Israel:

45 These are the rules and the laws and the decisions which Moses gave to the children of Israel after they came out of Egypt;

46 On the far side of Jordan, in the valley facing Beth-peor, in the land of Sihon, king of the Amorites, who was ruling in Heshbon, whom Moses and the children of Israel overcame after they had come out of Egypt:

47 And they took his land for a heritage, and the land of Og, king of Bashan, the two kings of the Amorites, whose lands were on the other side of Jordan to the east;