1 Samuel 20:12-13

12“By the Lord, the God of Israel, I will sound out my father by this time tomorrow or the next day. If I find out that he is favorable toward you, will I not send for you and tell you?

13If my father intends to bring evil on you, may the Lord punish Jonathan and do so severely if I do not tell you and send you away so you may leave safely. May the Lord be with you, just as he was with my father.