"Knowledge of God is of little value if it does not lead to obedience." (The Preacher's Homiletic Commentary) Do you truly know the Lord? Or are you like Israel in that you have "cast off the thing that is good" - you have "cast off" His influence in your life? In the day of trouble, be sure that you are not found to be the 1) Heartless Professor, 2) Distracted Professor, 3) False Professor, or 4) Hollow Professor! Because there is only one who gets the ear of God, and that is, the True Professor!