1 Samuel 20:3-4

Thy father certainly knoweth, etc. Though Saul did not know the entireness of Jonathan's love for David, yet he was aware of the friendship that existed between them, and consequently might keep his purpose a secret from Jonathan, especially if he considered that his frankness in speaking openly to his son and servants on a previous occasion had led to David's escape. David, therefore, urges upon his friend a different course, to which he assents. But how are we to explain the entirely different views taken of Saul's conduct by the two. When David tells his fears Jonathan utters an exclamation of horror, and says, "Thou shalt not die." Yet he knew that his father had talked to him and his Officers about putting David to death; that he had tried to kill him with his own hand, and on his escape had set people to watch his house with orders to slay him; and on David's flight to the prophet had thrice sent emissaries to bring him away by force. The explanation probably lies in Saul s insanity. When he threw his javelin at David and during the subsequent proceed. ings he was out of his mind. The violent fit at Naioth had for the time cleared his reason, and he had come back sane. Jonathan regarded all that had taken place as the effect of a mind diseased, and concluded, therefore, that David might now return to his home and wife, and resume his duties and take his place at the royal table. Should the old craze come back about David being his rival and destined successor, Saul would be sure to talk about it, and then Jonathan would give him timely warning. But David was convinced that it was no craze, but that Saul, sane or insane, had determined upon his death.