The Bible’s answer
Illustrating how to tell the difference between those who practice true religion and those who do not, the Bible says: “By their fruits you will recognize them. Never do people gather grapes from thorns or figs from thistles, do they?” (Matthew 7:16) Just as you can distinguish a grapevine from a thornbush by what it produces, you can distinguish true religion from false by its fruits, or by these identifying features.https://www.jw.org/en/bible-teachings/questions/what-is-the-true-religion/