Footnote
a “Originally, when the tabernacle was at Shiloh, there were altogether sixteen courses, equally divided between the descendants of Eleazar and Ithamar. Now that there were more chief men of Eleazar, David divided each of their eight courses into two, producing a total of sixteen, while the eight courses of Ithamar remained unchanged.”—Soncino Books of the Bible (1952, London, The Soncino Press), Vol. “Chronicles,” p. 130.