This is an excerpt taken from the preface of Martin Luther’s commentary on Galatians. He writes:

St. Paul sets about establishing the doctrine of faith, grace, forgiveness of sins, or Christian righteousness. His purpose is that we may understand exactly the nature of Christian righteousness and its difference from all other kinds of righteousness, for there are various sorts of righteousness. There is a political or civil righteousness, which emperors, princes of the world, philosophers, and lawyers deal with. There is also a ceremonial righteousness, which human traditions teach. This righteousness may be taught without danger by parents and schoolteachers because they do not attribute to it any power to satisfy for sin, to please God, or to deserve grace; but they teach such ceremonies as are necessary simply for the correction of manners and certain observations concerning this life. Besides these, there is another righteousness, called the righteousness of the law or of the Ten Commandments, which Moses teaches. We too teach this, according to the doctrine of faith.

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