believe in
US /bɪˈliːv ɪn/
UK /bɪˈliːv ɪn/

1.
geloven in
to have faith in the existence of something or someone
:
•
Do you believe in ghosts?
Geloof je in geesten?
•
I believe in God.
Ik geloof in God.
2.
geloven in, vertrouwen op
to have confidence in the ability or goodness of someone or something
:
•
I believe in you, you can do it!
Ik geloof in jou, je kunt het!
•
She still believes in the power of kindness.
Ze gelooft nog steeds in de kracht van vriendelijkheid.