1 Samuel 14:37-41

37So Saul asked God, “Should I go down after the Philistines? Will you deliver them into the hand of Israel?” But he did not answer him that day.

38Then Saul said, “All you leaders of the army come here. Find out how this sin occurred today.

39For as surely as the Lord, the deliverer of Israel, lives, even if it turns out to be my own son Jonathan, he will certainly die!” But no one from the army said anything.

40Then he said to all Israel, “You will be on one side, and I and my son Jonathan will be on the other side.” The army replied to Saul, “Do whatever you think is best.”

41Then 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.