There are several different meanings of the words "religion" and "spirituality," all of which are important. The whole point about an integral or comprehensive approach is that it must find a way to believably include all of those important meanings in a coherent whole.
Ken WilberIn the stillness of the night, the Goddess whispers. In the brightness of the day, dear God roars. Life pulses, mind imagines, emotions wave, thoughts wander. What are all these but the endless movements of One Taste, forever at play with its own gestures, whispering quietly to all who would listen: is this not yourself? When the thunder roars, do you not hear your Self? When the lightning cracks, do you not see your Self? When clouds float quietly across the sky, is this not your own limitless Being, waving back at you?
Ken WilberThe most striking feature of the perennial philosophy/psychology is that it presents being and consciousness as a hierarchy of dimensional levels, moving from the lowest, densest, and most fragmentary realms to the highest, subtlest, and most unitary ones.
Ken Wilber