Matthew 24:34 give us confidence that at least some of “this generation will by no means pass away” before seeing the start of the great tribulation.” Watchtower 2014 Jan 15 p.31
jj: here you can see the twisting by wt writers of the original text.
Jesus said that all these things will come to pass, then the generation would die (like it did in the first century). "all these things" obviously includes the disaster bigger than Noah's flood. aka Armageddon. that Jesus mentioned as fact in the prophecy.
The start of the GT is only a blip in all that.
wt says : generation dies at the beginning
"Jesus" says: generation will die off long after it is all over. (Jesus spoke to an anointed survivor 30 years later)
Even outright contradictions will not really sink in, here, or in wt land.
no shrinking of membership over absolute doctrinal error, sad but true, truth does not matter.