1 Samuel 20:33

31For as long as the son of Jesse lives on the earth, you will not be established, nor will your kingdom. Therefore now send and bring him to me, for he shall surely die!”

32Jonathan answered Saul his father, and said to him, “Why should he be put to death? What has he done?”

33Saul cast his spear at him to strike him. By this Jonathan knew that his father was determined to put David to death.

34So Jonathan arose from the table in fierce anger, and ate no food the second day of the month; for he was grieved for David, because his father had treated him shamefully.

35In the morning, Jonathan went out into the field at the time appointed with David, and a little boy with him.