What is the Sacred Mystery?

For those that know….Speak in riddles……So the others will continue to seek….For they must do so, to experience…….

It is not in words although all words emanate from it. It is not in hearing although all hearing emanates from it. It is not in touch although all touch emanates from it. It is not in sight but in the seeing. It can not be named as it is unnameable. Everything has life in it although it is beyond birth and death. It is the first cause that has no cause. It is the original ground of being.