In the Scriptures, to believe is not limited to an intellectual understanding of certain facts or even to the acceptance of them. Instead, it is to trust in and rely upon the object of our faith to the degree that we base our actions upon it. Our faith or belief in Jesus Christ is not validated by the strength of our verbal confession or even by what we supposedly feel in our hearts; rather, it is proven true or false by the degree to which His person and will determine our actions and direct the full course of our lives.
Washer, Paul, The Gospel Call and True Conversion, (RHB, 2013), Kindle Locations 1053–1057