Proverbs 24:7; Proverbs 31:8-9; Proverbs 31:26

Proverbs 24:7

7 Wisdom is too high for a fool: he openeth not his mouth in the gate.

Proverbs 31:8-9

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.

Proverbs 31:26

26 She openeth her mouth with wisdom; and in her tongue is the law of kindness.