The virtue of Faith is a supernatural virtue whereby we believe truths revealed by God and believe them on the authority of God revealing. : It is to this “evidence” that. the Apostle alludes, when he describes Faith as “the substance of things to be hoped for, the evidence of things which do not appear ” (Heb. 11:1). We believe, not because, of. the intrinsic truth of things seen by the natural light of reason, but because of the Divine authority which guarantees their truth.
An Act of Faith is a supernatural assent of the intellect, most certain and free, whereby we believe a truth revealed by God on His Divine authority.