Ezra 6:18
And they set up the priests in their division, and the Levites in their classes, for the work of God which is in Jerusalem; according to the writing of the book of Moses.
Numbers 3:6
Bring near the tribe of Levi, and make it stand before Aaron the priest; and they served him.
1 Chronicles 24:1
And to the sons of Aaron their divisions. The sons of Aaron: Nadab and Abihu, Eleazar and Ithamar.
2 Chronicles 35:4-5
And prepare yourselves to the house of your fathers in your divisions, in the writing of David king of Israel, and in the writing of Solomon his son:
Numbers 8:9-26
And bring near the Levites before the tent of appointment: and gather all the assembly of the sons of Israel.
1 Chronicles 23:1-26
And David was old and full of days, and he will make Solomon his son king over Israel