Faithful : Person in charge of collecting or receiving tithing.
It means that it is constant, that it remains, that it does not change. He is also the person who attends a type of worship frequently. Parishioner. Loyal.
He has faith, also that he is trustworthy. Follower of a person, idea or doctrine. It has fidelity, which fits what is expected of it.
FAITHFUL: Pin that secures the blades of the scissors.