From this you see once more why so much is ascribed to faith, that it alone may fulfil the law and justify without the Law works. You see that the First Commandment, which says, "Thou shalt worship one God," is fulfilled by faith alone. For though you were nothing but good works from the sole of your foot to the crown of your head, yet you would not be righteous, nor worship God, nor fulfil the First Commandment, since God cannot be worshiped unless you ascribe to Him the glory of truthfulness and of all goodness, which is due Him. And this cannot be done by works, but only by the faith of the heart. For not by the doing of works, but by believing, do we glorify God and acknowledge that He is truthful. Therefore, faith alone is the righteousness of a Christian man and the fulfilling of all the commandments. For he who fulfils the First, has no difficulty in fulfilling all the rest. But works, being insensate things, cannot glorify God, although they can, if faith be present, be done to the glory of God. At present, however, we are not inquiring what works and what sort of works are done, but who it is that does them, who glorifies God and brings forth the works. This is faith which dwells in the heart, and is the head and substance of all our righteousness. Hence, it is a blind and dangerous doctrine which teaches that the commandments must be fulfilled by works. The commandments must be fulfilled before any works can be done, and the works proceed from the fulfilment of the commandments [Rom. 13:10], as we shall hear. [Sidenote: Old Testament Types]