Ezra 6:18
And they set the priests in their sections, and the Levites in their divisions, for the service of God which is at Jerusalem, as it is written in the book of Moses.
Numbers 3:6
Bring the tribe of Levi near, and present them before Aaron the priest, so that they may minister to him.
1 Chronicles 24:1
And the divisions of the sons of Aaron were: The sons of Aaron: Nadab and Abihu, Eleazar, and Ithamar.
2 Chronicles 35:4-5
and prepare by the houses of your fathers, according to your divisions, according to the writing of David king of Israel, and according to the writing of Solomon his son.
Numbers 8:9-26
And you shall bring the Levites before the tabernacle of the congregation. And you shall gather the whole assembly of the sons of Israel together.
1 Chronicles 23:1-26
And David was old and full of days, and he made his son Solomon king over Israel.