F.B. Meyer emphasizes the importance of behaving valiantly for our people and cities, drawing inspiration from Joab's commitment to God amidst battle. He critiques the societal reluctance to mention God, advocating for a balance between divine reliance and personal responsibility. Meyer asserts that while ultimate victory belongs to God, we must actively engage in our efforts, reflecting a partnership with the Divine. He highlights that true faith involves diligent preparation and action, as seen in the early church's conquests through the Holy Spirit's guidance. The sermon calls believers to be proactive in their faith while trusting in God's sovereignty.