1 Samuel 20:5-10

So David said to Jonathan, “Behold, tomorrow is the new moon, and I ought to sit down to eat with the king. But let me go, that I may hide myself in the field until the third evening. If your father misses me at all, then say, ‘David earnestly asked leave of me to run to Bethlehem his city, because it is the yearly sacrifice there for the whole family.’ If he says, ‘It is good,’ your servant will be safe; but if he is very angry, know that he has decided on evil. Therefore deal kindly with your servant, for you have brought your servant into a covenant of the LORD with you. But if there is iniquity in me, put me to death yourself; for why then should you bring me to your father?” Jonathan said, “Far be it from you! For if I should indeed learn that evil has been decided by my father to come upon you, then would I not tell you about it?” Then David said to Jonathan, “Who will tell me if your father answers you harshly?”