Leviticus 25:40-42

Revised Standard Version

⁴⁰ he shall be with you as a hired servant and as a sojourner. He shall serve with you until the year of the jubilee; ⁴¹ then he shall go out from you, he and his children with him, and go back to his own family, and return to the possession of his fathers. ⁴² For they are my servants, whom I brought forth out of the land of Egypt; they shall not be sold as slaves.