Leviticus 25:39-55

‘And if your fellow countryman becomes so poor [in his dealings] with you that he sells himself to you [as payment for a debt], you shall not let him do the work of a slave [who is ineligible for redemption], but he is to be with you as a hired man, as if he were a temporary resident; he shall serve with you until the Year of Jubilee, and then he shall leave you, he and his children with him, and shall go back to his own family and return to the property of his fathers. For the Israelites are My servants whom I brought out of the land of Egypt; they shall not be sold in a slave sale. [1 Cor 7:23] You shall not rule over him with harshness (severity, oppression), but you are to fear your God [with profound reverence]. [Eph 6:9; Col 4:1] As for your male and female slaves whom you may have—you may acquire male and female slaves from the pagan nations that are around you. Moreover, from the children of the strangers who live as aliens among you, from them you may buy slaves and from their families who are with you, whom they have produced in your land; they may become your possession. You may even bequeath them as an inheritance to your children after you, to receive as a possession; you can use them as permanent slaves. But in respect to your fellow countrymen, the children of Israel, you shall not rule over one another with harshness (severity, oppression). ‘Now if the financial means of a stranger or temporary resident among you become sufficient, and your fellow countryman becomes poor in comparison to him and sells himself to the stranger who is living among you or to the descendants of the stranger’s family, then after he is sold he shall have the right of redemption. One of his relatives may redeem him: either his uncle or his uncle’s son may redeem him, or one of his blood relatives from his family may redeem him; or if he prospers, he may redeem himself. Then he [or his redeemer] shall calculate with his purchaser from the year when he sold himself to the purchaser to the Year of Jubilee, and the [original] price of his sale shall be adjusted according to the number of years. The time he was with his owner shall be considered as that of a hired man. If there are still many years [before the Year of Jubilee], in proportion to them he must refund [to the purchaser] part of the price of his sale for his redemption and release. And if only a few years remain until the Year of Jubilee, he shall so calculate it with him. He is to refund the proportionate amount for his release. Like a man hired year by year he shall deal with him; he shall not rule over him with harshness in your sight. Even if he is not redeemed during these years and under these provisions, then he shall go free in the Year of Jubilee, he and his children with him. For the children of Israel are My servants; My servants, whom I brought out of the land of Egypt. I am the LORD your God.