Our source devised the process of dividing and differentiating itself as a strategy to explore the nature of itself and its existence. The experiences and understandings reaped from its many sub-selves are expanding its understanding of itself at an exponential rate.
The experiences that each of us has, and the understanding that are gleaned from them, are not fully assimilated into the next higher level of our self until we reintegrate energetically with that next level. As a given level of self evolves its level of consciousness it is also increasing its frequency, drawing it ever closer to the frequency of its next higher level of self (parent self). When its frequency ascends to match the frequency of its parent self, then full reintegration is achieved and reunification with the parent self is complete.