Matthew 12:36-37

And I say unto you, that every idle word whatsoever men shall speak, they shall give an account concerning the same in the day of judgment.

James 1:26

But if any one seems to be religious, bridling not his own tongue, but deceiving his own heart, the religion of that man is vain.

James 3:2-12

For we all fail in many things; if any one fails not in word, the same is a perfect man, able even to bridle 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.

General references

Bible References

General references

Matthew 12:36
And I say unto you, that every idle word whatsoever men shall speak, they shall give an account concerning the same in the day of judgment.
James 1:26
But if any one seems to be religious, bridling not his own tongue, but deceiving his own heart, the religion of that man is vain.
James 3:2
For we all fail in many things; if any one fails not in word, the same is a perfect man, able even to bridle the whole body.