devotion : Idioms & Phrases
Days of devotion
(R. C. Ch.) , certain festivals on which devotion leads the faithful to attend mass. Shipley.
Webster 1913
self-devotion
Self`-de*vo"tion noun
Definitions
The act of devoting one's self, or the state of being self-devoted; willingness to sacrifice one's own advantage or happiness for the sake of others; self-sacrifice.