Recently while attending a WorldView Weekend Conference, I purchased several DVDs of previous talks and speakers at other similar WV conferences.
One of those talks was entitled "True and False Converts."
That DVD was about an hour in length and can be ordered at the WorldView Weekend website (and you will likely want to order it).
But, good news ---
In the meantime, there is a Free and shorter version on the WorldView Weekend Website that is the same 'talk' in a 'nutshell'.
This 'shorter' version is titled: "10 Biblical Hallmarks that Reveal a True Follower of Christ or an Imposter".
For those of you who are new to DIT (Daily Interesting Things), we don't usually post videos that are this long but this one is reallllllly important.
Bottom Line: you will definitely want to see this 21 minute video. HERE'S THE LINK