For the Word of God is not received by faith if it flits about in the top of the brain, but when it takes root in the depth of the heart . . . the heart's distrust is greater than the mind's blindness. It is harder for the heart to be furnished with assurance [of God's love] than for the mind to be endowed with thought.
John Calvin, Institutes of the Christian Religion, 2 Vols
faith, god, grace, intellect, soul