Leviticus 25:53-55

⁵³He is to be treated like a man hired year by year. You must make sure he is not treated with harshness.

⁵⁴If he is not redeemed by these means, then he must serve until the year of Jubilee, he and his children with him.

⁵⁵To me the people of Israel are servants. They are my servants whom I brought out of the land of Egypt. I am Yahweh your God.'”