1 Samuel 20:3-17

Then David took an oath before Jonathan and said, “Your father knows perfectly well about our friendship, so he has said to himself, ‘I won’t tell Jonathan—why should I hurt him?’ But I swear to you that I am only a step away from death! I swear it by the LORD and by your own soul!” “Tell me what I can do to help you,” Jonathan exclaimed. David replied, “Tomorrow we celebrate the new moon festival. I’ve always eaten with the king on this occasion, but tomorrow I’ll hide in the field and stay there until the evening of the third day. If your father asks where I am, tell him I asked permission to go home to Bethlehem for an annual family sacrifice. If he says, ‘Fine!’ you will know all is well. But if he is angry and loses his temper, you will know he is determined to kill me. Show me this loyalty as my sworn friend—for we made a solemn pact before the LORD—or kill me yourself if I have sinned against your father. But please don’t betray me to him!” “Never!” Jonathan exclaimed. “You know that if I had the slightest notion my father was planning to kill you, I would tell you at once.” Then David asked, “How will I know whether or not your father is angry?” “Come out to the field with me,” Jonathan replied. And they went out there together. Then Jonathan told David, “I promise by the LORD, the God of Israel, that by this time tomorrow, or the next day at the latest, I will talk to my father and let you know at once how he feels about you. If he speaks favorably about you, I will let you know. But if he is angry and wants you killed, may the LORD strike me and even kill me if I don’t warn you so you can escape and live. May the LORD be with you as he used to be with my father. And may you treat me with the faithful love of the LORD as long as I live. But if I die, treat my family with this faithful love, even when the LORD destroys all your enemies from the face of the earth.” So Jonathan made a solemn pact with David, saying, “May the LORD destroy all your enemies!” And Jonathan made David reaffirm his vow of friendship again, for Jonathan loved David as he loved himself.