In the third episode of "Murmuring and Complaining," Duane Sheriff addresses the dangerous habit of murmuring and complaining, which he identifies as the voice of unbelief. He contrasts this with the voice of faith, characterized by praise, worship, and thanksgiving. Philippians 2:14 instructs believers to "do all things without murmuring and disputings."

Murmuring and complaining stem from an evil heart of unbelief, which can lead to departing from the living God (Hebrews 3:12). Abraham, the father of faith, illustrates how he went from being weak in faith to becoming strong in faith (Romans 4:18-20). Abraham learned to "call things that be not as though they were" (Romans 4:17). Despite facing seemingly impossible circumstances, Abraham believed in hope against hope, giving glory to God and being fully persuaded that God was able to perform what He had promised (Romans 4:20-21).

Believers are encouraged to follow Abraham's example and cultivate a heart of faith that speaks the language of praise, worship, and thanksgiving. Our words have power, and when we speak from a heart of faith, we align ourselves with the faith of Jesus Christ that dwells within us (Galatians 2:20).