The book of Judah illustrates God's judgment on rebellion, while warning against the rebels who are corrupting other people. Judah then challenges the church to contend for the faith and stay faithful to God. As God's new temple, believers must build their lives on the core message of Jesus and then pray, love, and obey.
Their lives must reflect their faith because God's grace through Jesus demands a whole-life response that includes moral living. The way they live is the most reliable indicator of what they actually believe.