pietistic

adj

1. pertaining to pietism (Lutheran spiritual movement)

   “Quite apart from all the pietistic [translating pietistischen] and mystical writers [...] we also encounter clear-sighted men averse to the fantastic who use this very inexplicability of the phenomena of dreams in their endeavours to support their religious belief in the existence and intervention of superhuman powers.”

2. excessively pious

   “Hasidism was a pietistic devotional movement in which the relationship between Rebbe and disciple was of paramount importance.”