Binah.

Binah is known as the great sea. The understanding of this sephiroth is one of the most difficult to grasp philosophically. In completing the supernal triad, it is the feminine aspect of godhead; thus it is the 'space' that is interacted with by the 'motion' of chokmah. One concept that might help the student to understand binah is to relate it back to the idea of no-thing in zen buddhism. This is the total lack of seperation, and yet, it is even beyond no seperation, it becomes the child of the three pre-supernals, meaning that it takes part in the nothingness that exists before kabbalistic doctrine. Yet what is implied is that through manifestation of the second point (which allows essence to move in relation to another point) this emptiness becomes animate through interaction with the will of diety. As the will makes decisions of direction and speed, that original emptiness begins to change and undulate allowing the process of manifestation to begin. The difficult part in understanding this concept lies in its relation to the fourth sepiroth. The fourth sepiroth embodies the very basic form of the space time continuum, meaning that everything that happens in binah, is completely without structure or law. It becomes an absolute free for all of manifestation, which is nearly impossible to hold onto in any way. The way I have explained to people before is to use the idea of stacks of things. Say you have a table a lamp and a penny. This table, as most tables we know, is situated firmly upon a floor. Now, as common sense would dictate, the floor had to be created first, then the table placed upon it, followed by the lamp and the penny. The problem with understanding binah is that within the concept of it, the floor could have easily have been added 'last'. Yet even this explanation is deceptive, because past and future is a reaction caused by the laws of the universe as we know them, binah is completely free of linear time, more like a dream. It would be totally understandable for a being living in a universe based on the law of binah to spend 40 'years' as a human being, fly off into space, become a fishtank full of fish at the bottom of the ocean and then dissapear forever without leaving a single trace.