Exodus 23:12

12 aSix days you shall do your work, but on the seventh day you shall rest; that your ox and your donkey may have rest, and the son of your servant woman, and the alien, may be refreshed.

Leviticus 25:44-46

44As for your male and female slaves whom you may have: you may buy male and female slaves from among the nations that are around you. 45 bYou may also buy from among the strangers who sojourn with you and their clans that are with you, who have been born in your land, and they may be your property. 46You may bequeath them to your sons after you to inherit as a possession forever. You may make slaves of them, but over your brothers the people of Israel cyou shall not rule, one over another ruthlessly.

Nehemiah 5:5

5Now dour flesh is as the flesh of our brothers, our children are as their children. Yet ewe are forcing our sons and our daughters to be slaves, and some of our daughters have already been enslaved, but it is not in our power to help it, for other men have our fields and our vineyards.”

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