Proverbs 17:28

Even a fool, when he holds his peace, is considered wise. When he shuts his lips, he is prudent.

Job 13:5

O that ye would altogether be silent! And it would be your wisdom.

Proverbs 15:2

The tongue of the wise utters knowledge rightly, but the mouth of fools pours out folly.

Ecclesiastes 5:3

For a dream comes with a multitude of business, and a fool's voice with a multitude of words.

Ecclesiastes 10:3

Yea also, when the fool walks by the way, his understanding fails him, and he says to everyone [that] he is a fool.

Ecclesiastes 10:14

A fool also multiplies words; [yet] man knows not what shall be, and that which shall be after him, who can tell him?

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