Chief — Next under the high — priest; whence he is called the second priest, 2 Kings 25:18, and in case of the high — priest's absence by sickness or other necessary occasions, he was to perform his work, and he had a superiority over all the rest of the priests and Levites. The chief of the Levites — That is, over those three persons, who were each the chief of their several families, Numbers 3:24, Numbers 3:31, Numbers 3:34.
Related Commentaries of Numbers 3:32
Numbers 3:32
32 And Eleazar the son of Aaron the priest shall be chief over the chief of the Levites, and have the oversight of them that keep the charge of the sanctuary.