Deuteronomy 24:14,17
You shall not oppress an hired servant that is poor and needy, whether he be of your brothers, or of your strangers that are in your land within your gates:
Nave's Topical Index—AKJV

Deuteronomy 27:19
Cursed be he that perverts the judgment of the stranger, fatherless, and widow. And all the people shall say, Amen.
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Jeremiah 22:3
Thus said the LORD; Execute you judgment and righteousness, and deliver the spoiled out of the hand of the oppressor: and do no wrong, do no violence to the stranger, the fatherless, nor the widow, neither shed innocent blood in this place.
Nave's Topical Index—AKJV