1 Samuel 24:20-22 New Century Version (NCV)

20. I know you will surely be king, and you will rule the kingdom of Israel.

21. Now swear to me by the Lord that you will not kill my descendants and that you won’t wipe out my name from my father’s family.”

22. So David made the promise to Saul. Then Saul went back home, and David and his men went up to their hideout.

1 Samuel 24