I've been trying to find a serious theologian who has spoken on the issue of discipleship who believes that showing up in church after making a decision constitutes your being seen as a true disciple. J Vernon McGee, John MacArthur, Charles Spurgeon, and the list could go on and on. I'm reading or listening to their sermons and they all agree: Jesus required some pretty significant obedience and humility, not to mention being in the word, before he would bestow this description on a follower.
The video above goes briefly into the subject, but the book shown in the picture above takes on the issue in earnest. It is available on Amazon Kindle at http://bit.ly/GodCalled and will soon be out in paperback.