And I gathered them together to the river that runneth to Ahava; and there abode we in tents three days: and I viewed the people, and the priests, and found there none of the sons of Levi. The river that runneth to Ahava - Ahava was a river itself, which is supposed to be the same that is called Diava or Adiava, in the province of Adiabene; and perhaps the place whence the people of Ava came who were brought by the king of Assyria to Palestine, 2 Kings 17:24.
None of the sons of Levi - None that were simply Levites. He found priests, and they were sons of Levi; but no Levites that were not priests.