Proverbs 31:8 in the World English Bible
Open your mouth for the mute, in the cause of all who are left desolate.
Context
7 Let him drink, and forget his poverty, and remember his misery no more.
8 Open thy mouth for the dumb in the cause of all such as are appointed to destruction.
9 Open thy mouth, judge righteously, and plead the cause of the poor and needy.