In 1919 J Rutherford proclaimed that the WTS. organization had been selectively chosen by god to be his earthly voice for all mankind.
You could realistically say that he did so as marketing ploy to attract attension to the WTS. published goods and to himself as a spiritual leaders of sorts.
Mind you at that time they were still peddling books concerning Pyramidology, but thats another story.
Since that time the WTS. started to point their finger at Christendom as false teachers who were immersed with pagan traditions
but they on the other hand were true bible interpreters by virtue of god's guiding spirit being pored over them.
Over time this identifying significance of their organization being chosen by Christ was focused directly at the head editorial writers.
When you think about it it makes all the sense since the organization is trying to commercialize its products toward the public.
Of course the truthful reality is the WTS. adulterated, manipulated and exploited the bible to support the proliferation of the
organization's published works, creating their own false teachings, just as likewise they pointed their finger at Christendom.
If you think of a structured pyramid of power, that starts at the top with the GB (who now self proclaim that they are the FDSL)
right down to the congregational elders who have less, the GB have proportionately more of god's holy spirit than anyone else in the
organization.