While physical science is moving increasingly to an acceptance of multi-physical universes, mystics, having long since known this, are aware of an even greater complexity
--- numerous nonphysical dimensions within each physical dimension.
Expanding this reality from a collective one to each individual's human reality, there comes a realization to every soul on life's eternal path that they and all other human beings exist in different dimensions simultaneously. An expansion of inner awareness brings realization that the soul, or true Self, exists in many dimensions, in several different expressions of beingness.
When the psalmist uttered the words, "You are fearfully and wonderfully made," it was quite likely spoken with an awareness of how vast even one human existence is in its multiplicity.
Likewise, when the Christ Mind that was in Jesus spoke the words, "I am in this world, but not of it," the words conveyed an awareness of the multiple layers of what constitutes reality of the Self.