David did not know why Saul was upset with him. He did not know what he had done to cause Saul’s anger. It all seemed very irrational to him. As a result, he wanted to discover the reason for Saul’s hostility and he hoped that Jonathan could help him do so.1 Previously Jonathan was a means of reconciliation with Saul; he could possibly do the same again.2
1 Then David fled from Naioth in Ramah and came and said before Jonathan, “What have I done? What is my guilt? And what is my sin before your father, that he seeks my life?”