Romans 3:13

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

Luke 11:44

Alas for you, scribes and Pharisees, hypocrites! for you are like graves that are not seen; and men that walk over them know it not.

Mark 7:21-22

For from within, out of the heart of men, proceed the purposes which are evil: adulteries, lewd actions, murders,

Luke 11:39

And the Lord said to him: Now you Pharisees cleanse the outside of the cup and the plate; but your inward part is full of extortion and wickedness.

Romans 1:29-31

as they were filled with all unrighteousness, lewdness, wickedness, covetousness, malice; full of envy, murder, contention, deceit, malignity;

1 Thessalonians 2:5

For neither nattering words did we at any time use, as you know, nor a pretext for covetousness; God is witness:

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
For from within, out of the heart of men, proceed the purposes which are evil: adulteries, lewd actions, murders,
Luke 11:39
And the Lord said to him: Now you Pharisees cleanse the outside of the cup and the plate; but your inward part is full of extortion and wickedness.

Throat

Luke 11:44
Alas for you, scribes and Pharisees, hypocrites! for you are like graves that are not seen; and men that walk over them know it not.
Romans 3:13
their throat is an open sepulcher; with their tongues they have used deceit; the poison of asps is under their lips;

They

1 Thessalonians 2:5
For neither nattering words did we at any time use, as you know, nor a pretext for covetousness; God is witness: