Leviticus 25:42-44

American Standard Version

⁴² For they are my servants, whom I brought forth out of the land of Egypt: they shall not be sold as bondmen. ⁴³ Thou shalt not rule over him with rigor, but shalt fear thy God. ⁴⁴ And as for thy bondmen, and thy bondmaids, whom thou shalt have; of the nations that are round about you, of them shall ye buy bondmen and bondmaids.