Deuteronomy 33:8

And of Levi he said, [Let] thy Thummim and thy Urim [be] with thy holy one, whom thou didst prove at Massah, [and with] whom thou didst strive at the waters of Meribah;

Ver. 8. Let thy Thummin and thy Urim.] Sincerity of life and soundness of doctrine. See Trapp on " Exo 28:30 " There is great cause that ministers, of all men, should be much prayed for.