Proverbs 31:8-9 (NASB)
Open your mouth for the people who cannot speak,
For the rights of all the unfortunate.
Open your mouth, judge righteously,
I like this proverb, I think it's good
I think this is the bible at its best
And I think it is self explanatory:
That there is virtue in standing up for those who have no voice and those who are unfortunate, and also in defending the rights of "the poor and needy"
This is a good lesson