Can someone please give me a neutral explanation of the date 1919? Can the WT prove 1919 from the Bible? Or, is it more of a probability.
What about this quote? It seems like it is saying 1919 is probable, rather than fact:
*** wt chap. 14 p. 131 par. 8 How Does Jehovah Direct His Organization? ***
8 Since the slave class was loyally doing the Master’s work at his invisible return in 1914, there is evidence that it was entrusted with enlarged responsibilities in 1919. The years since then have been the time for a global witness to the Kingdom, and a great crowd of worshipers of Jehovah is being gathered with a view to their preservation through the great tribulation. (Matthew 24:14, 21, 22; Revelation 7:9, 10) These too need spiritual food, and it is served to them by the slave class. To please Jehovah, we therefore need to accept the instruction he provides through this channel and to act in harmony with it.