Wt writers are on record to have formulated and proclaimed world wide starting in 1918: " the world has anded, Millions now living will never die" Proclaimers book in the 400 pages.
If the deity selected them on the basis of that record, wt is fully justified to claim, that it has full divine approval now.
When it comes to truth, doctrine, anything goes. overlapping, anointing of the end generation.
overlapping and split personalities, taken to heaven at the beginning of the Great Tribulation, but only "passing away" after it is all over.
false prophecies over the place, see superior authorities 1929 to 1960ies.