Brother Duane teaches how the harmful behavior of murmuring and complaining stems from a heart of unbelief. God's love desires to transform our hearts so we can walk with Him in faith, gratitude, and thanksgiving. Murmuring and complaining are the voices of unbelief, while praise, worship, and thanksgiving are the voices of faith. 

Philippians 2:14 (ESV) says, "Do all things without grumbling or disputing." Murmuring and complaining question God's sovereignty, doubting His goodness and wisdom. God doesn't condemn us for our unbelief but lovingly convicts us. 

Sharing his experiences and convictions from the Holy Spirit, Duane explains how these negative actions can damage one's destiny and hinder God's purpose in life. He stresses the importance of leading a life characterized by faith, gratitude, and reverence for God, referencing scriptures such as Philippians 2:12-14 and Colossians 2:6-7.

Philippians 2:12 (ESV) instructs: "Work out your own salvation with fear and trembling." This fear is not anxiety but a holy reverence for God, trusting that His will and good pleasure are at work within us. When we walk in faith and thanksgiving, we experience God's blessings and purpose in our lives. Colossians 2:7 (ESV) states, "Abounding in thanksgiving." By giving thanks and praising God, our faith abounds, and we shine as a light in a world full of darkness.