1 Chronicles 26:13-19

MLV(i) 13 And they cast lots, the small as well as the great, according to their fathers' houses for every gate.
14 And the lot eastward fell to Shelemiah. Then for Zechariah his son, a discreet counselor, they cast lots and his lot came out northward. 15 To Obed-edom southward and to his sons the store-house. 16 To Shuppim and Hosah westward, by the Gate of Shallecheth, at the causeway that goes up, watch against watch. 17 Eastward were six Levites, four a day northward, four a day southward and for the store-house two by two. 18 For Parbar westward, four at the highway and two at Parbar.
19 These were the divisions of the gatekeepers, of the sons of the Korahites and of the sons of Merari.