Deuteronomy 16:20 

Follow justice and justice alone, so that you may live and possess the land the Lord your God is giving you.

Proverbs 31:9

Speak up and judge fairly; defend the rights of the poor and needy.

Luke 11:41

But now as for what is inside you — be generous to the poor, and everything will be clean for you.

Psalm 50:6

And the heavens proclaim his righteousness, for he is a God of justice.

Psalm 82:3

Defend the weak and the fatherless; uphold the cause of the poor and oppressed.