Martyn Lloyd-Jones called grumbling and arguing, "subtle enemies of the heart." In this message we look at why Paul (and the rest of Scripture) consider murmuring and disputing some of the greatest obstacles in the Christian life. While it is easy to justify these sins in our lives, what are the dangers and what is the cure for this defect of the heart? this message was preached during the morning service at Faith Reformed Church - Midland Park, NJ