4 This is the thing that ye must do: A third part of you, those who enter on the sabbath, shall be porters at the doors with the priests and the Levites;
2 Chronicles 23:4 Cross References - EJ2000
1 Chronicles 9:25
25 And their brethren, who were in their villages, came every seven days in their set times with them.
1 Chronicles 23:3-6
3 were numbered from the age of thirty years and upward; and their number by their polls, man by man, was thirty-eight thousand.
4 Of which, twenty-four thousand were to set forward the work of the house of the LORD, and six thousand were officers and judges;
5 moreover, four thousand were porters, and four thousand praised the LORD with the instruments which David had made to praise therewith.
6 And David divided them into courses according to the sons of Levi, namely, Gershon, Kohath, and Merari.
1 Chronicles 24:3-6
3 And David distributed them, Zadok being of the sons of Eleazar, and Ahimelech of the sons of Ithamar, according to their turns in their ministry.
4 And there were more men found of the sons of Eleazar than of the sons of Ithamar, and thus were they divided. Among the sons of Eleazar, there were sixteen chief men of the houses of their fathers and eight among the sons of Ithamar according to the houses of their fathers.
5 They divided them, therefore, by lot, one with another for of the sons of Eleazar and of the sons of Ithamar there were princes of the sanctuary and princes of God.
6 And Shemaiah, the scribe, the son of Nethaneel, one of the Levites, wrote them before the king and the princes and before Zadok, the priest, and Ahimelech, the son of Abiathar, and the heads of the fathers of the priests and Levites; one paternal house being taken for Eleazar, and one taken for Ithamar.
1 Chronicles 26:13-16
13 And they cast lots, the small as well as the great, according to the houses of their fathers, for each gate.
14 And the lot of the east fell to Shelemiah. Then for Zechariah, his son, a wise counsellor, they cast lots; and his lot came out for the north.
15 To Obededom towards the Negev; and to his sons the house of consultation.
16 To Shuppim and Hosah to the west, with the gate Shallecheth, by the causeway of the going up, ward against ward.