I don't see how it is possible to verify the claim that God made a choice/decision at any time. That's why it's so common for religious groups to point at some event, link it to a handful of scattered verses in a book/poem, and claim that it means something.
It's more possible to check claims and see how accurate they are (or aren't).
The JWs claim that God blessed their organization in 1919, with the implication being that after a period where they were tested, they were suddenly and inexplicably released from prison, with their long sentences commuted as if by a miracle. But it seems that their release in 1919 was engineered when Rutherford agreed to remove certain pages/passages from one of his books, which were highly critical of the Catholic Church.
If the latter is the case (I don't remember where I read about it), then there is nothing miraculous or divine about their release from prison in 1919. They simply cut a deal and then pretended that it didn't happen the way it did. That doesn't strike me as the kind of thing a group actually blessed by God would have done.