The statement that Samuel Sewell would agree regarding slaves is: the moral principles of the Bible are diametrically opposed to slavery.
Samuel Sewall was a judge, businessman, and printer in the Province of Massachusetts Bay, best known for his involvement in the Salem witch trials, for which he later apologized, and his essay The Selling of Joseph (1700), which criticized slavery. Furthermore, he served for many years as the chief justice of the Massachusetts Superior Court of Judicature, the province's high court.