No one. It is only if you, as well as every other individual, can determine or discern whether the one claiming to be in league with the group he advocates is honest and true to his beliefs. That is one who doesn't act as a hypocrite.[spoiler]http://www.gty.org/resources/questions/QA162/how-can-we-know-if-our-faith-is-real[/spoiler] If the link isn't working, google, "the character of genuine saving faith," and click the first link.