faith
[feyth]
–noun
1.confidence or trust in a person or thing: faith in another’s ability.2.belief that is not based on proof: He had faith that the hypothesis would be substantiated by fact.
3.belief in god or in the doctrines or teachings of religion: the firm faith of the Pilgrims.
4.belief in anything, as a code of ethics, standards of merit, etc.: to be of the same faith with someone concerning honesty.
5.a system of religious belief: the Christian faith; the Jewish faith.
6.the obligation of loyalty or fidelity to a person, promise, engagement, etc.: Failure to appear would be breaking faith.
7.the observance of this obligation; fidelity to one’s promise, oath, allegiance, etc.: He was the only one who proved his faith during our recent troubles.
8.Christian Theology . the trust in God and in His promises as made through Christ and the Scriptures by which humans are justified or saved.
—Idiom
9.in faith, in truth; indeed: In faith, he is a fine lad.