For one historian, the sanctioning of slavery was taking the attitude of those whom the prophet Isaiah denounced because they were saying: “Good is bad and bad is good. ” ​ — Isaiah 5: 20.
Ühe ajaloolase arvates tähendas orjuse heakskiit nende suhtumise omaksvõtmist, kelle mõistis hukka Jesaja, kuna nad ütlesid, et hea on kuri ja kuri on hea.