You must not mistreat any widow or orphan.

Deuteronomy 10:18
He executes justice for the fatherless and widow, and He loves the foreigner, giving him food and clothing.

Deuteronomy 24:17
Do not deny justice to the foreigner or the fatherless, and do not take a widow's cloak as security.

Deuteronomy 24:18
Remember that you were slaves in Egypt, and the LORD your God redeemed you from that place. Therefore I am commanding you to do this.

Job 31:16
If I have denied the desires of the poor or allowed the widow's eyes to fail,

Proverbs 23:10
Do not move an ancient boundary stone or encroach on the fields of the fatherless,

Proverbs 23:11
for their Redeemer is strong; He will take up their case against you.

Jeremiah 7:6
if you no longer oppress the foreigner and the fatherless and the widow, and if you no longer shed innocent blood in this place or follow other gods to your own harm,

Jeremiah 7:7
then I will let you live in this place, in the land that I gave to your fathers forever and ever.

Ezekiel 22:7
Father and mother are treated with contempt. Within your walls the foreign resident is exploited, the fatherless and the widow are oppressed.

Zechariah 7:10
Do not oppress the widow or the fatherless, the foreigner or the poor. And do not plot evil in your hearts against one another.'

Malachi 3:5
"Then I will draw near to you for judgment. And I will be a swift witness against sorcerers and adulterers and perjurers, against oppressors of the widowed and fatherless, and against those who defraud laborers of their wages and deny justice to the foreigner but do not fear Me," says the LORD of Hosts.

You shall not afflict any widow, or fatherless child.