1 Samuel 20:28-33

Jonathan then answered Saul, “David earnestly asked leave of me to go to Bethlehem, for he said, ‘Please let me go, since our family has a sacrifice in the city, and my brother has commanded me to attend. And now, if I have found favor in your sight, please let me get away that I may see my brothers.’ For this reason he has not come to the king’s table.” Then Saul’s anger burned against Jonathan and he said to him, “You son of a perverse, rebellious woman! Do I not know that you are choosing the son of Jesse to your own shame and to the shame of your mother’s nakedness? For as long as the son of Jesse lives on the earth, neither you nor your kingdom will be established. Therefore now, send and bring him to me, for he must surely die.” But Jonathan answered Saul his father and said to him, “Why should he be put to death? What has he done?” Then Saul hurled his spear at him to strike him down; so Jonathan knew that his father had decided to put David to death.