1 Samuel 20:12-17

12Then 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.

13But 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.

14While I am still alive, please be kind to me. Continue to love me, as the Lord loves his people. And if I die,

15continue 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.’

16So Jonathan made an agreement with David's family. He said, ‘I am asking the Lord to destroy all David's enemies.’

17Jonathan asked David to promise again that they would be friends. That was because Jonathan loved David as much as he loved his own life.