If any man among you seems to be religious, and bridles not his tongue, but deceives his own heart, this man's religion is vain.
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George Leo Haydock
AD 1849
If any man think He here blames those hot disputes, which seem to have been frequent amongst the converted Jews, concerning the necessity of observing the legal rites. In vain, says he, do you pique yourselves upon the rigorous observance of the law, and your zeal to unite its ceremonial rites with the practice of the gospel. If you be void of the essence of Christianity, which is charity, prudence, and moderation, your religion will avail you nothing. (Calmet)
This may also be understood of those devotees who are fond of making a parade of their virtues, and who, as St. Gregory says, (hom. xii. in Mat.) afflict their bodies indeed with fasting, but for this they expect to be esteemed by men. (Haydock)
A man must not imagine himself to be religious, and perfect in the way of virtue, unless he governs and bridles his tongue from oaths, curses, calumnies, detractions, lies, of which more in the third chapter. (Witham)