Ezra 6:18
And they set the priests in their divisions and the Levites in their divisions, for the service of God at Jerusalem, as it is written in the Book of Moses.
Numbers 3:6
"Bring the tribe of Levi near, and set them before Aaron the priest, that they may minister to him.
1 Chronicles 24:1
The divisions of the sons of Aaron were these. The sons of Aaron: Nadab, Abihu, Eleazar, and Ithamar.
2 Chronicles 35:4-5
Prepare yourselves according to your fathers' houses by your divisions, as prescribed in the writing of David king of Israel and the document of Solomon his son.
Numbers 8:9-26
And you shall bring the Levites before the tent of meeting and assemble the whole congregation of the people of Israel.
1 Chronicles 23:1-26
When David was old and full of days, he made Solomon his son king over Israel.