Joshua's leadership is marked by his commitment to carrying out the instructions given by Moses, who was following God's commands. The verse describes the conquest of royal cities, which were significant centers of power and influence. By destroying these cities and their kings, Joshua is ensuring that the Israelites can establish themselves in the land without opposition. This act of destruction is not merely about warfare; it represents a spiritual cleansing, removing influences that could lead the Israelites away from their covenant with God.
The verse also underscores the importance of obedience to divine commands. Joshua's actions are not just military tactics but acts of faithfulness to God's plan. The narrative of Joshua's conquests serves as a reminder of the rewards of steadfast faith and the fulfillment of God's promises. It encourages believers to trust in God's guidance and to act courageously in the face of challenges, knowing that divine support is with them.