Perceiving the Creator is called faith. A common mistake in interpreting this word lies in thinking that faith means groping in the dark, without seeing or perceiving the Creator, i.e. taking this word in a sense directly opposite to its true meaning. According to the Kabbalah, the Creator’s light pervading man, the light of man’s link with the Creator, the sensation of unification is called the light of faith or just faith.
Faith, the Creator’s light, gives man a sensation of being linked with the eternal, a comprehension of the Creator, a sense of complete, explicit communication with the Creator, of absolute safety, immortality, greatness and strength.
Courtesy of http://www.youtube.com/watch?v=jQcNiD0Z3MU