The book of Joshua is about the Israelites taking the land. It is a book about warfare. As Christians we talk a lot about spiritual warfare but do we really practice it?
Remember when Jesus was at Caesarea Philippi? It’s up near the Golan heights, where the tribe of Dan was. Caesarea Philippi was the center of pagan worship. Jesus said in Matthew 16, while he was pointing to the temples of pagan worship, “upon this rock I will build my church and the gates of hell shall not prevail against it.” Who is doing the defending in that verse? Gates are for defense. They were the gates of hell. Hell was defending against the church! The church of Jesus Christ is to be in an offensive posture not defensive. But we tend to act like we are prisoners of war.
Joshua teaches us about victory and how to get it. A Christian does not work towards victory, he works from victory! Jesus Christ already won the victory when he rose again from the dead. That’s our guarantee of success.