1 Samuel 20:2-4

New Century Version

² Jonathan answered, “No! You won’t die! See, my father doesn’t do anything great or small without first telling me. Why would he keep this from me? It’s not true!”

³ But David took an oath, saying, “Your father knows very well that you like me. He says to himself, ‘Jonathan must not know about it, or he will tell David.’ As surely as the Lord lives and as you live, I am only a step away from death!”

⁴ Jonathan said to David, “I’ll do anything you want me to do.”