What does the Bible say about pure and undefiled religion?

In James 1:26-27, the apostle emphasizes that true religion is not merely a matter of external piety or rituals, but a heart-filled expression of genuine faith. This includes tangible acts of compassion, such as visiting the fatherless and widows in their affliction, demonstrating an outward manifestation of genuine inner faith. Furthermore, it involves maintaining a life that is unspotted from the world, rejecting worldly values and practices that contradict God's purity and holiness. This underscores the necessity for a faith that actively expresses itself through love and moral integrity.