'Religious' in the Bible

So Paul stood up in front of the Areopagus and said, "Men of Athens, I see that you are very religious in every way.

They have known for a long time, if they would but testify to it, that I lived as a Pharisee, adhering to the standards of our strictest religious party.

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