Natural faith rests upon natural things: that is to say, it is faith in man; in man’s wisdom and man’s capability. Religious faith rests upon religious things; that is to say, it is faith in God’s wisdom and God’s mighty resources. The man who possesses religious faith, may be said to have the power, of adding the infinite to the finite. He relies on the divine promises, in the occasions on which they properly apply, as things in a PRESENT fulfillment; and thus incorporates with his own comparative and acknowledged weakness, the mighty energy of a present God.
And besides all this, God bestows especial honor upon those, who possess religious faith. They and they only can properly be regarded as his own, his chosen and adopted children. Their names are written upon his heart of infinite love. Every element of his nature is pledged in their behalf. And hence we should not be surprised, when we consider what power faith has in itself by its natural law, and also that it takes hold of the infinite God, and enlists in our behalf his mighty heart of love, that the Holy Scriptures are sprinkled over, as it were, with illustrations and declarations of the immense efficacy and of the wonderful triumphs of this divine principle:
"Faith, mighty faith, the promise sees,
"And looks to that alone;
"Laughs at impossibilities,
"And cries, IT SHALL BE DONE."
— edited from The Life of Faith (1852) Part 1, Chapter 3.