‘Trinity’ is an idea that is at the foundation of many religions. It is a primary observation that can be held in consciousness. From a spiritual or metaphysical point of view, all that exists comes from a single unknowable Source that is characterized in different ways. Modern physics agrees on this point and calls the unknowable source or the ‘Big Bang’ a ‘singularity’ because it is the only known exception to the laws of physics.
The universe that follows from this unknowable source is completely lawful in its knowable forms and movement. Man, using intelligence derived from this source, uncovers or discovers the lawful nature of what occurs. This use of intelligence constitutes the growth of understanding. ‘Understanding’ is a thinking and feeling modality in the awareness or conscious nature of humankind.
We exist in a knowable universe that is derived from an unknowable source. Known and unknown exist in awareness simultaneously forming what is called, in spiritual language, a ‘sacred mystery’. All that can be known is the object of conscious awareness. All that has yet to be known or discovered by conscious awareness is called unconscious.
So, ‘conscious’ and ‘unconscious’ are the nature of the intelligent life of awareness in humankind. Whether or not humans are material or spiritual in their origin cannot be known. One has to choose whether matter begets conscious awareness or spirit (consciousness) begets itself in us. None the less unknowable source, unconsciousness and consciousness are the foundation of the ‘three-ness’ or trinity of nature.