believe in
US /bɪˈliːv ɪn/
UK /bɪˈliːv ɪn/
1.
to have faith in the existence of something or someone
:
•
Do you believe in ghosts?
•
I believe in God.
2.
to have confidence in the ability or goodness of someone or something
:
•
I believe in you, you can do it!
•
She still believes in the power of kindness.