believe in

phrasal verb
1
to feel certain that somebody/something exists
ایمان داشتن به, اعتقاد داشتن به, باور داشتن به
2
to feel that you can trust somebody and/or that they will be successful
باور داشتن به, اعتقاد داشتن به, اطمینان داشتن
They need a leader they can believe in.
I never thought I could make it as an actor, but my parents always believed in me.
synonyms attrust
3
to think that something is good, right or acceptable
اعتقاد داشتن, باور داشتن به, ایمان داشتن, معتقد بودن, قبول داشتن
Do you believe in capital punishment?
I don't believe in hitting children.