A Christian ought to be disposed and prepared to keep in mind that he has to reckon with God every moment of his life. - John Calvin

The apostle denies that anyone actually knows Christ, who has not learned to put off the old man, corrupt with deceitful lusts, and to put on Christ.

For there have been some people, otherwise good and holy, who saw that intemperance and luxury time and again drive man to throw off all restraints unless he is curbed by the utmost severity. And in their desire to correct such a pernicious evil they have adopted the only method which they saw fit, namely to permit earthly blessings only insofar as they were an absolute necessity. This advice showed the best of intentions but was far too rigid. For they committed the very dangerous error of imposing on the consequence of others stricter rules than those laid down in the Word of the Lord. By restricting people within the demands of necessity, they meant abstinence from everything possible. On the other hand, there are many nowadays who seek a pretext to excuse intemperance in the use of the external things, and who desire to indulge the lusts of the flesh. Such people take for granted that liberty should not be restricted by any limitations at all; but to this we can never agree. We must grant, indeed, that it is not right or possible to bind the consciences of others with hard and fast rules.

To make everything yield to custom would be to do the greatest injustice. Were the judgments of mankind correct, custom would be regulated by the good. But it is often far otherwise in point of fact; for, whatever the many are seen to do, forthwith obtains the force of custom. But human affairs have scarcely ever been so happily constituted as that the better course pleased the greater number. Hence the private vices of the multitude have generally resulted in public error.