Someone mentioned the meeting of the 120 where a replacement for Judas was made. It was stated that the Bible doesn't say where they were.
Contrary to that assertion, the Bible writrer Luke, in the last verse of his record states that they were in the "temple continually", from the time of the ascention till Pentecost. This would have included the event of the choosing. The record in Acts chapter 2 also demonstrates by its entire context that they were indeed in the Temple when all things took place.
There is a great deal of evidence to prove that all events took place in the Temple, while there is not even one shred of evidence to indicate a "private home" as the Watchtower asserts. The "upper room" event mentioned in Acts chapter one was a single event the evening of the ascention.
Why the big point?
Simply, as the Pentecost paper points out, the events of Pentecost 33 CE are used to assert the authority structure of the Governing Body. If they twist the truth of the events, then their authority is false.
As well, the Watchtower has asserted throughout its history, that it is necessary to get out of the "Churches" and into "private homes" in the supposed same manner as the 1st century Christians got out of the Temple. That is the foundation for the book study which is carried through till this day. As well, the first Kingdom Halls of the Watchtower organization were taught to be parallel to the getting out of the "Temple" of Christendom and into their own "upper room".
In fact, many of the first Kingdom Halls were rented rooms chosen specifically on the second floor of buildings. Everything is an allegory in WatchtowerWorld.
This issue is of paramount importance, because the truth about it undermines the entire structure of the Watchtower Organization.