Matthew 12:34

Ye brood of vipers, how can ye, being evil, speak good things? For out of the abundance of the heart the mouth speaketh.

Romans 3:13-14

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

James 3:6-8

And the tongue is a fire, a world of iniquity: it is the tongue among the members which defileth the whole body and setteth on fire the course of nature, and is set on fire of 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 have they used deceit; the poison of asps is under their lips.

General references

Romans 3:14
Whose mouth is full of cursing and bitterness;