'Urim' in the Bible
And thou shalt put in the breastplate of judgment the Urim and the Thummim; and they shall be upon Aaron's heart, when he goeth in before the LORD: and Aaron shall bear the judgment of the children of Israel upon his heart before the LORD continually.
And he put the breastplate upon him: also he put in the breastplate the Urim and the Thummim.
And he shall stand before Eleazar the priest, who shall ask counsel for him after the judgment of Urim before the LORD: at his word shall they go out, and at his word they shall come in, both he, and all the children of Israel with him, even all the congregation.
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;
Then Saul said, "O Lord God of Israel! If this sin has been committed by me or by my son Jonathan, then, O Lord God of Israel, respond with Urim. But if this sin has been committed by your people Israel, respond with Thummim." Then Jonathan and Saul were indicated by lot, while the army was exonerated.
And when Saul inquired of the LORD, the LORD answered him not, neither by dreams, nor by Urim, nor by prophets.
And the Tirshatha said unto them, that they should not eat of the most holy things, till there stood up a priest with Urim and with Thummim.