Torah, Slavery and the Jews

 https://www.chabad.org/library/article_cdo/aid/305549/jewish/Torah-Slavery-and-the-Jews.htm

The greatest force in the emancipation of slavery in colonial times were the "Society of Friends," also known as the "Quakers." Historians discuss the phenomena of the Quakers in the context of the "Hebraizing of Christianity." Again, their leaders were deeply influenced by readings of the Kabbalah in translation and by humanists who had learned their ideas from rabbinic sources.