As humans, you often think of pairing in terms of pairing up for compatibility, love or the complimenting of strengths.  In nature, such groupings often occur in threes, for like the trinity, the power of three points, when finely balanced, and aligned, far exceeds that of two.  [Examples include] body, soul and earth. Our souls also have one with the Mother and Father, regardless of what we name them. Such forms are used in endless patterns to help us do what we are here to do, to remember who we are and quite literally, to help hold space for the claiming that comes on the heels of such remembrance. You are part of many.  That is why ebb and flow and surrender are so important. It is another aspect of the dance of creation, the dance of the One manifesting as many.
Rhiannon; Truth Bearer pg. 117