James: Its consistent focus on practical action in the life of faith is reminiscent of the Wisdom Literature in the Old Testament, encouraging God's people to act like God's people. The pages of James are filled with direct commands to pursue a life of holiness. He makes no excuses for those who do not measure up.
Jude: What's the big idea? Jude's purpose in his letter was twofold: he wanted to expose the false teachers that had infiltrated the Christian community, and he wanted to encourage Christians to stand firm in the faith and fight for the truth.