First of all if people are as naive as to believe in prophethood of Mr Isawtheilghminister, they will be able to accept whatsoever justification and nobody will be able to help here, that's just a treacherous human nature that tends to think wishfully rather than correctly. 

As to Mr Isawthel Minister's self-justifications, they are partially true, for the early Christians, even the Apostles, considered the Second Coming as something imminent, even in their own life's time; but even they, the apostles evolved in this perception and of course already Paul does not believe that Christ will come in his lifetime (2 Tim. 4:6-8), and in the consciousness of Church this time has become gradually more apophatic, while the Church teaching about the end concentrated not on the end of history, but the end of each human life, which, as a matter of fact, is a mini-end of the world, for this person, because his historical world ends indeed with his physical death. So the logic is: do not bother yourself about the Second Coming that only God knows, "this thing is not for you to know" (Acts 1:7), but bother about what you know, i.e., your own sinfulness and your task to get liberated from it through life in Christ, in prayers and good deeds. 

But when a person returns to this first-Christian sentiments and alarmingly prophesizes about the end of history and imminent coming of Christ, like Jehovah Witnesses founder Russel so many times prophesized about coming of Christ, one can most certainly smell a blatant charlatanism in all that.