believe in

US /bɪˈliːv ɪn/
UK /bɪˈliːv ɪn/
"believe in" picture
1.

~の存在を信じる

to have faith in the existence of something or someone

:
Do you believe in ghosts?
幽霊の存在を信じますか
I believe in God.
私は神の存在を信じます
2.

~を信じる, ~を信頼する

to have confidence in the ability or goodness of someone or something

:
I believe in you, you can do it!
私はあなたを信じています、あなたはできる!
She still believes in the power of kindness.
彼女はまだ優しさの力を信じています