'Religion' in the Bible

Instead, they had several arguments with him about their own religion and about a certain Jesus who had died but Paul kept asserting he was alive.

These things have the appearance of wisdom in promoting self-made religion, humility, and harsh treatment of the body, but they have no value against self-indulgence.

If anyone thinks that he is religious and does not bridle his tongue, but instead deceives himself, his religion is worthless.

A religion that is pure and stainless according to God the Father is this: to take care of orphans and widows who are suffering, and to keep oneself unstained by the world.