1 Chronicles (Author Compiled by Isaiah and Ezra from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
24:5And they were divided by lot, one with another; for the princes of the sanctuary and the princes of God were of the sons of Eleazar and of the sons of Ithamar.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.