This sermon uses the passage in Mark 12:13-17, where Jesus is questioned about paying taxes to Caesar, to explore the broader themes of authority, particularly God’s authority over our lives. The sermon focuses on two key questions: Does God have authority over our mouths, and does God have authority over our money? It connects these ideas to the concepts of tithing, offerings, and living in proper priority with God. The speaker uses the analogy of the coin bearing Caesar’s image and applies it to Christians bearing God's image.