1 Samuel 20:8-12

So deal kindly with your servant, for you have brought your servant into a covenant of the Lord with you. But if I am guilty of wrongdoing, kill me yourself; for why then should you bring me to your father?”

Jonathan said, “Far be it from you! For if I in fact learn that my father has decided to inflict harm on you, would I not inform you?”

Then David said to Jonathan, “Who will inform me if your father answers you harshly?”

Jonathan said to David, “Come, and let’s go out to the field.” So both of them went out to the field.

Then Jonathan said to David, “The Lord, the God of Israel, is my witness! When I have sounded out my father about this time tomorrow or the third day, behold, if he has a good feeling toward you, shall I not then send word to you and inform you?