Faith is a sure and steadfast trust, whereby we assure ourselves that God will perform unto us all those things that he has promised, chiefly and specially, spiritual benefits, and in them, remission of sins; and righteousness in Christ and for Christ. Which is confirmed by the author of of the Epist., to the Heb., in these words, “Faith is the ground of things which are hoped for, and the evidence of things which are not seen.” The interpretation and exposition of which description (so far as concerns the use and practice thereof) who is so desirous to know, may see set down in the 4. Chap., of the Epist., to the Rom. Wherein after the Apostle had said that Abraham was justified by faith, and that the inheritance of the world was given to him through faith; he afterward adds, that this reverend and blessed Patriarch had respect unto the goodness and power of God,
whereby he quickens the dead, and calls those things which be not, as though they were: and therefore that above hope, that he should be the father of many Nations, according to that which was spoken to him. So shall thy seed be. And he not weak in this says, considered his own body, which was dead, being almost and hundred years old, neither the deadness of Sarae’s womb: Neither did he doubt of the promise of God through unbelief, but was strengthened in the faith, and gave glory to GOD, being fully assured, that he which had promised, was also able to do it, and therefore it was imputed to him for righteousness, &c
Hereby may everyone easily perceive that faith undoubtedly believes that those things shall be performed, and through the goodness and power of God be brought to pass, which otherwise seem never possible to be performed; that faith does always look into the promises and power of God: and finally, that faith is assured, certain, undoubted, and invincible persuasion, conceived of the goodness and power of God, whereby this glory is ascribed, attribute, and entitled to God, that he both will and also can save us. All of which are signified in that usual and accustomed form of confession, which every one privately undertakes and pronounces for himself, saying: “I believe in God.” For in these few words is set forth and contained the whole sum and signification of faith.