Faith receiveth the promise, embraceth it, and comforteth the soul unspeakably with it. Faith is so great an artist in arguing and reasoning with the soul, that it will bring over the hardest heart that it hath to deal with. It will bring to my remembrance at once, both my vileness against God, and his goodness towards me; it will show me, that though I deserve not to breathe in the air, yet that God will have me an heir of glory.

The Works of John Bunyan: Experimental, doctrinal, and practical (ed. 1850)