aligot: ... why then has He allowed that deceiving organisation to fool so many millions of honest hearted people ... ?
That's between you and "Jehovah," although I will say, as a honest-hearted atheist, his nonexistance is the simplest answer.
As for the millions of honest-hearted people, some of the most vicious people I've ever met have been dubs. Many other dubs, especially elders, honest-heartedly bully, shun, or molest other dubs, including innocent children. If you throw in their blood policy, you can add murder-by-proxy to the list, too.
As a group, they're the most back-biting, gossip-mongering, and smugly patronizing bunch of human beings I've ever seen. I left the dubs 30 years ago, and I still haven't met any group of people as just plain mean as they are.
And I haven't even started on the WTS itself yet.