From all this you will again understand why so much importance is attributed to faith, so that it alone can fulfil the law and justify without any works. For you see that the First Commandment, which says, "Thou shalt worship one God only," is fulfilled by faith alone. If you were nothing but good works from the soles of your feet to the crown of your head, you would not be worshipping God, nor fulfilling the First Commandment, since it is impossible to worship God without ascribing to Him the glory of truth and of universal goodness, as it ought in truth to be ascribed. Now this is not done by works, but only by faith of heart. It is not by working, but by believing, that we glorify God, and confess Him to be true. On this ground faith alone is the righteousness of a Christian man, and the fulfilling of all the commandments. For to him who fulfils the first the task of fulfilling all the rest is easy. Works, since they are irrational things, cannot glorify God, although they may be done to the glory of God, if faith be present. But at present we are inquiring, not into the quality of the works done, but into him who does them, who glorifies God, and brings forth good works. This is faith of heart, the head and the substance of all our righteousness. Hence that is a blind and perilous doctrine which teaches that the commandments are fulfilled by works. The commandments must have been fulfilled previous to any good works, and good works follow their fulfillment, as we shall see. But, that we may have a wider view of that grace which our inner man has in Christ, we must know that in the Old Testament God sanctified to Himself every first-born male. The birthright was of great value, giving a superiority over the rest by the double honour of priesthood and kingship. For the first-born brother was priest and lord of all the rest. Under this figure was foreshown Christ, the true and only First-born of God the Father and of the Virgin Mary, and a true King and Priest, not in a fleshly and earthly sense. For His kingdom is not of this world; it is in heavenly and spiritual things that He reigns and acts as Priest; and these are righteousness, truth, wisdom, peace, salvation, etc. Not but that all things, even those of earth and hell, are subject to Him--for otherwise how could He defend and save us from them?--but it is not in these, nor by these, that His kingdom stands.