Leviticus 25:55

…53 And as a year­ly hired ser­vant shall he be with him: and the other shall not rule with rigour over him in thy sight. 54 And if he be not re­deemed in these years, then he shall go out in the year of ju­bile, both he, and his chil­dren with him. 55 For unto me the chil­dren of Is­rael are ser­vants; they are my ser­vants whom I brought forth out of the land of Egypt: I am the LORD your God.