Proverbs 17:28

Even a fool, when he keeps silent, is considered wise;
When he closes his lips, he is considered prudent.

Job 13:5

“O that you would be completely silent,
And that it would become your wisdom!

Proverbs 15:2

The tongue of the wise makes knowledge acceptable,
But the mouth of fools spouts folly.

Ecclesiastes 5:3

For the dream comes through much effort and the voice of a fool through many words.

Ecclesiastes 10:3

Even when the fool walks along the road, his sense is lacking and he demonstrates to everyone that he is a fool.

Ecclesiastes 10:14

Yet the fool multiplies words. No man knows what will happen, and who can tell him what will come after him?

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