Proverbs 30:32

If thou hast acted basely by lifting thyself up, - if thou hast plotted evil, put thy hand to thy mouth!

Job 21:5

Turn round to me, and be astonished, and lay hand on mouth!

Job 40:4

Lo! I am of no account, what shall I reply to thee? My hand, have I laid on my mouth:

Proverbs 17:28

Even a fool, holding his peace, is accounted, wise, - He that closeth his lips, is thought to have understanding.

Proverbs 26:12

Thou hast seen a man wise in his own eye, - more hope of a dullard, than of him!

Ecclesiastes 8:3-4

Not rashly from his presence, shouldst thou go: do not take thy stand in a vexatious thing, - for, whatsoever he pleaseth, he will do.

Micah 7:16-17

Nations, shall see, that they may turn pale at all their valour, - they shall lay hand on mouth, their ears, shall be silent:

Romans 3:19

Now we know that, whatsoever things the law saith, to them who are within the law, it speaketh, in order that, every mouth, may be stopped and all the world come, under penal sentence, unto 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
Thou hast seen a man wise in his own eye, - more hope of a dullard, than of him!
Ecclesiastes 8:3
Not rashly from his presence, shouldst thou go: do not take thy stand in a vexatious thing, - for, whatsoever he pleaseth, he will do.

Lay

Proverbs 17:28
Even a fool, holding his peace, is accounted, wise, - He that closeth his lips, is thought to have understanding.
Job 21:5
Turn round to me, and be astonished, and lay hand on mouth!
Job 40:4
Lo! I am of no account, what shall I reply to thee? My hand, have I laid on my mouth:
Ecclesiastes 8:4
Where the word of a king is, there is power, - who then may say to him, What wouldst thou do?
Micah 7:16
Nations, shall see, that they may turn pale at all their valour, - they shall lay hand on mouth, their ears, shall be silent:
Romans 3:19
Now we know that, whatsoever things the law saith, to them who are within the law, it speaketh, in order that, every mouth, may be stopped and all the world come, under penal sentence, unto God.