1 Samuel 20:10-17

10 David asked Jonathan, ‘If your father answers you in an angry way, who will tell me?’

11 Jonathan said, ‘Come with me into the field.’ So they went there together.

12 Then Jonathan said to David, ‘I make this promise to you, and the Lord, Israel's God, knows that it is true. Tomorrow or the next day I will find out what my father is thinking about you. If he is feeling friendly to you, I will send someone to tell you. 13 But if my father wants to hurt you, I will tell you clearly. I ask the Lord to punish me, if I do not tell you. I will help you to escape and be safe. I pray that the Lord will bless you, as he blessed my father. 14 While I am still alive, please be kind to me. Continue to love me, as the Lord loves his people. And if I die, 15 continue to be kind to my family. Even when the Lord removes every one of your enemies from the earth, do not forget about my family.’

16 So Jonathan made an agreement with David's family. He said, ‘I am asking the Lord to destroy all David's enemies.’ 17 Jonathan asked David to promise again that they would be friends. That was because Jonathan loved David as much as he loved his own life.