In the last days (ie, right now) there will come a time when it will become increasingly harder and harder to find the truth of God's word.  Preachers won't preach it anymore, the government and atheist groups will suppress, hide or try to corrupt it, or even rewrite it, churches will change it, and many other things.  In short, it will become REALLY hard to find the undoctored, unaltered, purely presented gospel.  For all intents and purposes, we're already there.