Bible: Leviticus 25:39-43
25:39 “‘If your brother becomes impoverished with regard to you so that he sells himself to you, you must not subject him to slave service. 1 25:40 He must be with you as a hired worker, as a resident foreigner; 2 he must serve with you until the year of jubilee, 25:41 but then 3 he may go free, 4 he and his children with him, and may return to his family and to the property of his ancestors. 5 25:42 Since they are my servants whom I brought out from the land of Egypt, they must not be sold in a slave sale. 6 25:43 You must not rule over him harshly, 7 but you must fear your God.