What does the Bible say about luxury and self-indulgence?

In James 5:5, we see a clear condemnation of luxury and self-indulgence among the rich. The apostle points out that those who indulge in such excesses have nourished their hearts, leading to a kind of spiritual blindness. This reflects the biblical principle that living for earthly pleasures can harden the heart towards God. Wealth is not inherently evil, but using it to glorify oneself while neglecting the needs of the poor is a grave sin. Such self-indulgence brings about a complacency that forgets the very source of all good, ultimately resulting in judgment from God (Deuteronomy 32:15).