The lips of the righteous know what is acceptable: but the mouth of the wicked speaketh frowardness. The lips of the righteous know what is acceptable - And what they believe to be most pleasing and most profitable, that they speak, but the wicked man knows as well what is perverse, and that he speaketh forth. As the love of God is not in his heart, so the law of kindness is not on his lips.
Commentary on the Bible, by Adam Clarke [1831].