keep faith with (someone or something)
To maintain loyalty to someone or something; to keep one's promises. Do you trust Ralph? Do you think he'll be able to keep faith with us when people start pressuring him to do the opposite?
keep faith with someone
to be loyal to someone. I intend to keep faith with my people and all they stand for. We could not keep faith with them any longer.
break/keep ˈfaith with somebody
break/keep a promise that you have made to somebody; stop/continue being loyal to somebody: The government claims they have kept faith with the people by reducing the crime rate.