Matthew 12:34

O race of vipers, how can ye speak good things, who are yourselves so wicked? for out of the abundance of the heart the mouth speaketh.

Romans 3:13-14

Their throat is an open sepulchre: with their tongues they have used deceit; the poison of asps is under their lips:

James 3:6-8

And the tongue is a fire, a world of iniquity: so is the tongue among our several parts, defiling the whole body, inflaming the course of nature, and is set on fire by hell.

Treasury of Scripture Knowledge

Summary

His mouth is full of cursing and deceit and fraud: under his tongue is mischief and vanity.

And deceit

General references

Bible References

Full

Romans 3:14
whose mouth is full of cursing and bitterness:

And deceit

Romans 3:13
Their throat is an open sepulchre: with their tongues they have used deceit; the poison of asps is under their lips:

General references

Romans 3:14
whose mouth is full of cursing and bitterness: