faith.

FAITH: –noun
1.confidence or trust in a person or thing
2.belief that is not based on proof
3.belief in god or in the doctrines or teachings of religion
4.belief in anything, as a code of ethics, standards of merit, etc.
5.a system of religious belief
6.the obligation of loyalty or fidelity to a person, promise, engagement, etc.
7.the observance of this obligation; fidelity to one's promise, oath, allegiance, etc.
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.