Proverbs 10:19

In the abundance of words transgression ceaseth not, And whoso is restraining his lips is wise.

James 3:2

for we all make many stumbles; if any one in word doth not stumble, this one is a perfect man, able to bridle also the whole body;

James 1:19

So then, my brethren beloved, let every man be swift to hear, slow to speak, slow to anger,

Psalm 39:1

To the Overseer, to Jeduthun. -- A Psalm of David. I have said, 'I observe my ways, Against sinning with my tongue, I keep for my mouth a curb, while the wicked is before me.'

Ecclesiastes 5:3

For the dream hath come by abundance of business, and the voice of a fool by abundance of words.

Proverbs 17:27-28

One acquainted with knowledge is sparing his words, And the cool of temper is a man of understanding.

Ecclesiastes 10:13-14

The beginning of the words of his mouth is folly, And the latter end of his mouth Is mischievous madness.

Treasury of Scripture Knowledge

Summary

Proverbs 10:19

In the multitude of words there wanteth not sin: but he that refraineth his lips is wise.

But

General references

Proverbs 13:3

Proverbs 21:23

Bible References

But

One acquainted with knowledge is sparing his words, And the cool of temper is a man of understanding.

To the Overseer, to Jeduthun. -- A Psalm of David. I have said, 'I observe my ways, Against sinning with my tongue, I keep for my mouth a curb, while the wicked is before me.'

So then, my brethren beloved, let every man be swift to hear, slow to speak, slow to anger,

for we all make many stumbles; if any one in word doth not stumble, this one is a perfect man, able to bridle also the whole body;

General references

Whoso is keeping his mouth, is keeping his soul, Whoso is opening wide his lips -- ruin to him!

Whoso is keeping his mouth and his tongue, Is keeping from adversities his soul.