Isaiah 5:20 - Joseph Benson’s Commentary on the Old and New Testaments

Wo unto them that call evil good, and good evil That endeavour to confound both the names and the natures of virtue and vice, of piety and impiety; commend and applaud what is evil, and disparage and discountenance what is good; that put darkness for light, and light for darkness, &c. Ignorance and error, for knowledge and truth: in other words, who subvert, or pervert, all the great principles of truth, wisdom, and of righteousness. A most corrupt condition of a church and state is that indeed, “in which men, accustomed to vices, begin, with the things themselves, to lose also the names of them, and to draw a veil, as it were, over their impieties, by sanctifying their crimes with the names of virtues.” This reproof of the prophet supposes, that the difference between good and evil, sin and holiness, is as self-evident as that between the most contrary qualities which we are informed of by the report of our senses: and that the advantage which light hath above darkness does not shine out with a brighter evidence than the pre-eminence which virtue hath above vice, righteousness above unrighteousness. See Lowth.