Religion is the attempt by those immersed in duality (seeing existence as being made up of separate essences, consisting of the self and the other) to make sense of the experience of oneness (seeing all forms as expressions of the one essence- the "I", "the Self" or "God").
No words can adequately describe oneness, for words are products of duality. Therefore, all attempts by religion to describe true spirituality (i.e. oneness) must fall short whether by accident or design!
All we can say is to look beyond the mind- which separates all things- to what lies beneath, where the true self lies!