Urim in the Bible

Therefore Saul said, ?LORD, God of Israel, why have you not answered your servant this day? If this sin is mine or in Jonathan my son, LORD, God of Israel, give Urim. But if this sin is in your people Israel, give Thummim.? And Jonathan and Saul were chosen, but the people were cleared.

And when Saul inquired of the LORD, the LORD answered him not, neither by dreams, nor by Urim, nor by prophets.