Joshua 9:14

And the men, the princes of Israel, took of their victuals, either to convince themselves of the truth of the statements presented to them, or in an act implying readiness to make a league with the Gibeonites, and asked not counsel at the mouth of the Lord, thus transgressing an explicit command of the Lord, Numbers 27:21; for that was one of the functions of the high priest, to ask advice of the Lord in all difficult questions by means of Urim and Thummim.