'Chiefs' in the Bible

Then I set apart twelve of the chiefs of the priests, even Sherebiah, Hashabiah, and ten of their brethren with them,

Watch ye, and keep them, until ye weigh them before the chiefs of the priests and the Levites, and the princes of the fathers houses of Israel, at Jerusalem, in the chambers of the house of Jehovah.

Then arose Ezra, and made the chiefs of the priests, the Levites, and all Israel, to swear that they would do according to this word. So they sware.