noun
plural faiths
[noncount] :strong belief or trust in someone or something
[noncount] :belief in the existence of God :strong religious feelings or beliefs
[count] :a system of religious beliefs :religion
accept/take (something) on faith
to accept (something) as true without proof or evidence that it is true
an article of faith
something that is believed without being questioned or doubted
break faith with
to stop supporting or being loyal to (someone) :to betray (someone)
keep faith with
to continue supporting or being loyal to (someone)
keep the faith
to continue to believe in, trust, or support someone or something when it is difficult to do so