James 4 advises believers to avoid sinful behavior and to instead pursue righteousness. James condemns worldliness and disloyalty to God, saying that friendship with the world is enmity with God, and that prideful boasting is an evil thing. He encourages humility and submission to God, promising that he will draw near to those who do so. James also addresses the dangers of judging others and emphasizes the importance of acknowledging one's dependence on God. The chapter concludes with a warning against presumptuous planning, pointing out that life is uncertain and can change at any moment.