Faith is basic to spiritual life (He 11:6), but what exactly is it?
Faith is supernatural confidence (Mk 11:22), absolute assurance (He 10:22), the absence of doubt about something. (Ja 1:6) It is so inexplicably complete and strong that it becomes in itself evidence of the veracity of its object. (He 11:1) It is distinct from desire and wishful thinking; it can only be stronger or weaker in terms of the scope of what is believed, not in the strength of the belief.
Faith is God’s gift enabling us to trust Christ for eternal salvation (Ep 2:8), to abound in hope (Ro 15:13) and to access the transforming power of God. (He 10:38) It is the flip side of repentance(Ac 20:21): God’s gift of full persuasion convincing us of truth.