Forty years before the Israelites entered into the promised land, their parents had been given the same opportunity, but their faithlessness resulted in them missing out. As we know, that generation refused to enter into the land and was forced instead to wander in the wilderness until they all died off.
In verse 15, we see how Joshua and the next generation were wise not to repeat the same mistake of faithlessness. At the conclusion of the conquest, we read that Joshua was faithful to obey all God had commanded, which led to the successful conquest of the land. God was not just after a portion of faithful obedience; He was after full, faithful obedience. Each battle and each step in each battle was a step of faith for Joshua and the Israelites. They could not have picked and chosen which steps to take and which not to take. They had to walk fully in faith, and when they did, they were successful. God was not after their obedience in isolation—just as He is not after ours in isolation. Instead, He is after our faith, which is made known through our obedience.
In what areas of your life are you struggling to walk fully in faith? Why? What steps can you take toward more faithfulness?