This is the kind of kook that the world uses to paint all Christians as lunatics.
If he has been "scrutinizing" his Bible for 70 years, why has he never run across Ecclesiastes 1:4:
One generation passeth away, and another generation cometh: but the earth abideth for ever.
I guess Jesus should have consulted with Harold Camping before He put in the Scriptures that He would have a kingdom on earth that would last for 1000 years.