Faith is a belief in something even though there is no evidence to prove the belief is legitimate. Many people have faith in god even though they have not seen or met this deity. When you have faith then you are confident in the outcome even though this can not be proven, you are acting on instinct rather than proof.
I like to think our need for faith is a hint from God. An atheist is someone who can’t take a hint
Promises are only as good as the giant teddy bears they are built upon
The greatest act of faith is when a man understands he is not God.
There is more faith in an honest doubt, believe me, than in half the creeds