Romans 3:13

Their throat is an open grave, they are treacherous with their tongues, the venom of an asp lies under their lips.

Luke 11:44

Woe to you! you are like unsuspected tombs; men walk over them unawares."

Mark 7:21-22

From within, from the heart of man, the designs of evil come: sexual vice, stealing, murder,

Luke 11:39

but the Lord said to him, "You Pharisees do clean the outside of the cup and the plate, but your inner life is filled with rapacity and malice.

Romans 1:29-31

till they are filled with all manner of wickedness, depravity, lust, and viciousness, filled to the brim with envy, murder, quarrels, intrigues, and malignity ??slanderers,

1 Thessalonians 2:5

We never resorted to flattery (you know that), nor to any pretext for self-seeking (God is witness to that);

Treasury of Scripture Knowledge

Summary

For there is no faithfulness in their mouth; their inward part is very wickedness; their throat is an open sepulchre; they flatter with their tongue.

Bible References

Inward

Mark 7:21
From within, from the heart of man, the designs of evil come: sexual vice, stealing, murder,
Luke 11:39
but the Lord said to him, "You Pharisees do clean the outside of the cup and the plate, but your inner life is filled with rapacity and malice.

Throat

Luke 11:44
Woe to you! you are like unsuspected tombs; men walk over them unawares."
Romans 3:13
Their throat is an open grave, they are treacherous with their tongues, the venom of an asp lies under their lips.

They

1 Thessalonians 2:5
We never resorted to flattery (you know that), nor to any pretext for self-seeking (God is witness to that);