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.
Faith is confirmed by the heart, confessed by the tongue, and acted upon by the body
Hard times, bad times, or tough times, I still have faith in god.