1 Samuel 20:2-3

2Jonathan said to him, “Far from it! You shall not die. My father does nothing important or insignificant without telling me. So why would he hide this thing from me? It is not so!”

3But David vowed again, saying “Your father certainly knows that I have found favor in your sight, and he has said, ‘Do not let Jonathan know this, or he will be worried.’ But truly as the Lord lives and as your soul lives, there is hardly a step between me and death.”