Proverbs 30:32

If you have done foolishly in lifting up yourself, or if you have thought evil, lay your hand upon your mouth.

Job 21:5

Look at me, and be astonished, and lay your hand upon your mouth.

Job 40:4

Behold, I am vile; what shall I answer you? I will lay my hand upon my mouth.

Proverbs 17:28

Even a fool, when he holds his peace, is counted wise: and he that shuts his lips is esteemed a man of understanding.

Proverbs 26:12

See a man wise in his own eyes? there is more hope of a fool than of him.

Ecclesiastes 8:3-4

Be not hasty to go out of his presence: stand not for an evil thing; for he does whatsoever pleases him.

Micah 7:16-17

The nations shall see and be ashamed at all their might: they shall lay their hand upon their mouth, their ears shall be deaf.

Romans 3:19

Now we know that whatsoever things the law says, it says to them who are under the law: that every mouth may be stopped, and all the world may become guilty before God.

Treasury of Scripture Knowledge

Summary

If thou hast done foolishly in lifting up thyself, or if thou hast thought evil, lay thine hand upon thy mouth.

Bible References

Thou hast done

Proverbs 26:12
See a man wise in his own eyes? there is more hope of a fool than of him.
Ecclesiastes 8:3
Be not hasty to go out of his presence: stand not for an evil thing; for he does whatsoever pleases him.

Lay

Proverbs 17:28
Even a fool, when he holds his peace, is counted wise: and he that shuts his lips is esteemed a man of understanding.
Job 21:5
Look at me, and be astonished, and lay your hand upon your mouth.
Job 40:4
Behold, I am vile; what shall I answer you? I will lay my hand upon my mouth.
Ecclesiastes 8:4
Where the word of a king is, there is power: and who may say unto him, What are you doing?
Micah 7:16
The nations shall see and be ashamed at all their might: they shall lay their hand upon their mouth, their ears shall be deaf.
Romans 3:19
Now we know that whatsoever things the law says, it says to them who are under the law: that every mouth may be stopped, and all the world may become guilty before God.