Question: What is a “flood” for the group?
Answer: If the group as a whole is unable to overcome its increasing desire, if the friends reach hatred and cannot overcome it, it means they are drowning in the waters of the flood.
When they sense the approaching flood and the forces that overcome them (Gevurot), they must put forth mutual efforts to build an Ark, meaning to express mutual bestowal in order to be saved from every person’s individual egoism and the common hatred. That is exactly how the authors of The Book of Zohar sat down to study, feeling hatred for one another, and then revealed love.
Everything depends on whether or not the friends use the Torah as it was intended, whether they build the Ark, the common Kli of mutual bestowal, unity, and mutual guarantee in which they will be saved from the flood.
From the 1st part of the Daily Kabbalah Lesson 12/29/10, Writings of Rabash