faith

ot noun

1. A trust or confidence in the intentions or abilities of a person, object, or ideal from prior empirical evidence. I have faith in the goodness of my fellow man.
2. The process of forming or understanding abstractions, ideas, or beliefs, without empirical evidence, experience or observation. I have faith in the healing power of crystals.
3. A religious or spiritual belief system. The Christian faith.
4. An obligation of loyalty or fidelity and the observance of such an obligation. He acted in good faith to restore broken diplomatic ties after defeating the incumbent.