The History of the Esoteric School 1904–1914, Volume Two
GA 265
Why No Ritual Can Take Place During the Holy Nights
From Instruction Class, Hanover, Christmas 1911
The reason why no ceremony takes place during the days from December 24 to January 6, the day of the appearance of Christ, no ceremony takes place at the meetings of our occult brotherhood is that those whom we call the wise masters of the East withdraw to the sanctuary during this time to gather their strength, which they then give to both all of humanity and our occult brotherhood with renewed vigor.
From the Instruction Lesson, Hanover, December 31, 1911
It has already been pointed out that in the days from December 24 to January 6, no occult meetings can take place at which the ritual is used. During the momentous thirteen days which close with the spiritual birth of the Christ, the wise Masters of the East withdraw in order to gather the forces which they pour out upon Humanity during the rest of the year, and which for us are the Wisdom to which we have to conform.