Exodus 22:22-24

22:22 “You must not afflict any widow or orphan. 22:23 If you afflict them in any way and they cry to me, I will surely hear their cry, 22:24 and my anger will burn and I will kill you with the sword, and your wives will be widows and your children will be fatherless.

Psalms 140:12

140:12 I know that the Lord defends the cause of the oppressed

and vindicates the poor.