1 Chronicles 26:7-8, 13-19

The sons of Shemaiah: Othni, and Rephael, and Obed, Elzabad, whose brethren were valiant men, Elihu, and Semachiah. All these were of the sons of Obed-edom: they and their sons and their brethren, able men in strength for the service; threescore and two of Obed-edom.

And they cast lots, as well the small as the great, according to their fathers’ houses, for every gate. And the lot eastward fell to Shelemiah. Then for Zechariah his son, a discreet counsellor, they cast lots; and his lot came out northward. To Obed-edom southward; and to his sons the store-house. To Shuppim and Hosah westward, by the gate of Shallecheth, at the causeway that goeth up, watch against watch. Eastward were six Levites, northward four a day, southward four a day, and for the store-house two and two. For Parbar westward, four at the causeway, and two at Parbar. These were the courses of the doorkeepers; of the sons of the Korahites, and of the sons of Merari.