1 Samuel 20:9 KJV
And Jonathan said, Far be it from thee: for if I knew certainly that evil were determined by my father to come upon thee, then would not I tell it thee?
1 Samuel 20:9, King James Version
In context
8 Therefore thou shalt deal kindly with thy servant; for thou hast brought thy servant into a covenant of the Lord with thee: notwithstanding, if there be in me iniquity, slay me thyself; for why shouldest thou bring me to thy father?
9 And Jonathan said, Far be it from thee: for if I knew certainly that evil were determined by my father to come upon thee, then would not I tell it thee?
10 Then said David to Jonathan, Who shall tell me? or what if thy father answer thee roughly?