(1) A holy person in a dream probably represents the (spiritual) wisdom and power residing in your unconscious; the deep core of your psyche. What is the holy person saying? (On ‘mana personalities’)
(2) A holy place may symbolize the deep core of your psyche (as in (1) above).
See Also: Church.
(3) Holiness may signify some inviolable principle or infallible authority. But beware: this may be the work of an over-developed conscience (super-ego) arising out of an introjected father image (on super-ego).
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