Leviticus 25:47-55

‘Now if a sojourner or stranger close to you becomes rich, and one of your brethren who dwells by him becomes poor, and sells himself to the stranger or sojourner close to you, or to a member of the stranger’s family, after he is sold he may be redeemed again. One of his brothers may redeem him; or his uncle or his uncle’s son may redeem him; or anyone who is near of kin to him in his family may redeem him; or if he is able he may redeem himself. Thus he shall reckon with him who bought him: The price of his release shall be according to the number of years, from the year that he was sold to him until the Year of Jubilee; it shall be according to the time of a hired servant for him. If there are still many years remaining, according to them he shall repay the price of his redemption from the money with which he was bought. And if there remain but a few years until the Year of Jubilee, then he shall reckon with him, and according to his years he shall repay him the price of his redemption. He shall be with him as a yearly hired servant, and he shall not rule with rigor over him in your sight. And if he is not redeemed in these years, then he shall be released in the Year of Jubilee—he and his children with him. For the children of Israel are servants to Me; they are My servants whom I brought out of the land of Egypt: I am the LORD your God.