Haha funny thing is, nothing on earth or in hell can stop the restoration of apostles and prophets in our day, you cant fight against God you know lol. The falling away in our time will be due to the reality of the kingdom that will come upon the earth, and the hardship that will come. Only those that are truly His will be able to stand. Anyone that is saved to anything other than Christ Himself will not be willing to die to the degree necessary (nor can they). That's not to say that some wont be genuinely converted, and many will be added that have never been in a church, we are going to see a true representation of Jesus Christ on the earth, then He will return.