Proverbs 13:3

He guarding his mouth, watched his soul: he opening wide his lips, destruction to him.

Proverbs 21:23

He watching his mouth and his tongue watches his soul from straits.

Proverbs 12:13

In the transgression of the lips is the snare of evil: and the just one shall come forth out of straits.

Proverbs 18:7

The mouth of the foolish is destruction to him, and his lips the snare of his soul.

Proverbs 18:21

Death and life in the hand of the tongue: and they loving it shall eat its fruit

Psalm 39:1

To the overseer, to Jeduthun: chanting of David. I said, I will watch my way from sinning with my tongue: I will watch for my mouth with a muzzle while yet the unjust one is before me.

Proverbs 10:19

In the multitude of words transgression shall not cease: and he withholding his lips is prudent

Proverbs 20:19

He revealing a secret going about tale-bearing: and thou shalt not intermingle with him embracing his lips.

Matthew 12:36-37

And I say to you, That every idle word which men speak, they shill return word for it in the day of judgment.

James 1:26

If any among you seem to be religious, bridling not his tongue, but deceiving his heart, the religion of this one vain.

James 3:2-12

For in many things we all stumble. If any stumble not in word, this a perfect man, able to govern by a bridle also the whole body.

Treasury of Scripture Knowledge

Summary

He that keepeth his mouth keepeth his life: but he that openeth wide his lips shall have destruction.

Bible References

General references

Proverbs 10:19
In the multitude of words transgression shall not cease: and he withholding his lips is prudent
Proverbs 12:13
In the transgression of the lips is the snare of evil: and the just one shall come forth out of straits.
Proverbs 21:23
He watching his mouth and his tongue watches his soul from straits.
Psalm 39:1
To the overseer, to Jeduthun: chanting of David. I said, I will watch my way from sinning with my tongue: I will watch for my mouth with a muzzle while yet the unjust one is before me.
Matthew 12:36
And I say to you, That every idle word which men speak, they shill return word for it in the day of judgment.
James 1:26
If any among you seem to be religious, bridling not his tongue, but deceiving his heart, the religion of this one vain.
James 3:2
For in many things we all stumble. If any stumble not in word, this a perfect man, able to govern by a bridle also the whole body.