Atma Bhai wrote:What was the purpose of revising Murlis when according to BK's Shiva was entering into Dadi Gulzar?
I think it was as per the directions given by BapDada in one of the first few Avyakt Vanis narrated immediately after the demise of Brahma Baba. In one of those Vanis, it was stated that the Murlis that have been narrated until then must be revised, i.e. studied again. He never meant 'revision' to be 'amendment along with revision', which the BKs have unfortunately been doing ever since 1969.
Atma wrote:Can any one shed some light on why 5 years was chosen to revise Murlis?
That may be because only 5 years' record of Murlis are available with the BKs out of the Murlis narrated during a period of 18 years from 1951 to January, 1969. The same are reprinted every 5 years and circulated among all BK centers/gitapathshalas.
As regards your last two questions, I feel that BKs would be in a better position to answer them.
With regards,
OGS,
Arjun