Preach to the choir Religion |
Crux of the matter |
Speak of the devil |
An act of faith |
A hermit is usually a religious person who decides to live a solitary life so they can contemplate their god without extraneous distraction.
Some hermits in earlier periods of the Christian church were immured into churches — i.e. were in rooms which were bricked up. (Elizabeth Báthory was not a hermit, although in the same state.)
Not to be confused with hermit crabs, though some hermits can be quite crabby.