And it is challenging of course to those who want to get out of it as much truth as possible.
You can know it when you find the people who teach about the end of the world based on the Bible .
If we are near the end the words of Daniel 12.4,9 must be fulfilled in our times. That means that the newest truths of the Bible are available and it may be that many of the past religious views became obsolete.
To get a good start go the http://www.familyradio.com and get hold on Harold Camping's teachings .This old man of 86 ( or 87 ) has a very interesting Open Forum program .
I listen to his programs and yet I am siding with Jehovah's Witnesses while he is against them. This may cause you to pause and I hope will be a challenge to you in the near future.