Input (grade 9): Jonathan agrees to return to Saul and discover his ultimate intent. While dining with Saul, Jonathan pretends that David has been called away to his brothers, but Saul sees through this and castigates Jonathan for being the companion of David, and it becomes clear that Saul wants David dead.
Output (grade 5): But Saul's son Jonathan is bound to David in friendship, which makes his anger fume on Jonathan as well.