Leviticus 25:43-45

Revised Standard Version

⁴³ You shall not rule over him with harshness, but shall fear your God. ⁴⁴ As for your male and female slaves whom you may have: you may buy male and female slaves from among the nations that are round about you. ⁴⁵ You may also buy from among the strangers who sojourn with you and their families that are with you, who have been born in your land; and they may be your property.