Is. 5:20 Woe unto them that call evil good, and good evil; that put darkness for light, and light for darkness; that put bitter for sweet, and sweet for bitter!
21 Woe unto them that are wise in their own eyes, and prudent in their own sight!
22 Woe unto them that are mighty to drink wine, and men of strength to mingle strong drink:
23 Which justify the wicked for reward, and take away the righteousness of the righteous from him!
Some understand this of false prophets rejecting the true worship of God, and recommending false worship; others of wicked judges, pronouncing the causes of bad men good, and of good men evil; others of sensualists, that speak in praise of drunkenness, gluttony, and all carnal pleasures, and fleshly lusts, and treat with contempt fear, worship, and service of God. It may very well be applied to the Scribes and Pharisees in Christ's time, who preferred the evil traditions of their elders, both to the law of God, that is holy, just, and good, and to the Gospel.... (John Gill)
Whoever it was they were Jews.