Why do you actually believe in God?

[Mystic]

It's not necessary that God be proven by me or these arguments or these words. God is manifest whether we acknowledge or don't. I believed in God before these arguments and perspectives were known to me.

Essentially you are saying God wouldn't need these arguments or phrases that I am saying to be known and proven to you. And you are right, he doesn't. He is there with you whether you acknowledge him or don't.