We can look at Israel's wilderness journey as an allegory for our own lives as believers. After Messiah delivers us from the bondage of sin, there is a journey of sanctification—a process of being set apart unto God—that God wants His people to go through. This isn't only for His glory—although that's the primary reason—but for our own good as well. It would do us no good to live in the Promised Land if we are still enslaved to Egypt in our hearts.