Matthew 12:34

Offspring of vipers, how can you, being evil, speak good things? For out of the abundance of the heart the mouth speaks.

Romans 3:13-14

their throat is an opened tomb, with their tongues they practise deceit, the poison of asps is under their lips.

James 3:6-8

And the tongue is a fire, the tongue is made a world of wickedness among our members, it defiles the whole body and sets on fire 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
Their mouth is full of cursing and bitterness.

And deceit

Romans 3:13
their throat is an opened tomb, with their tongues they practise deceit, the poison of asps is under their lips.

General references

Romans 3:14
Their mouth is full of cursing and bitterness.