Are you a psychic sensitive? If so, there is a chance you can do it by restoring the "connexions" in your subconscious and awakening the sixth and seventh senses all psi-sensitive human beings are to greater or lesser degrees endowed with.

YOU cannot do it in the partly technological, highly directed way the Hidden Powers have their sensitives do it in the bunkers underground, I'm afraid...for obvious reasons.

As for "holy purposes", I expect that you must be a man of great moral vigour to believe you can do this for honourable purposes and refuse to exploit the power as so many do (did, in the distant past)...