13 Their throats are just like open graves, with their tongues they have spoken treachery; the poison of asps is under their lips.
Romans 3:13 Cross References - Williams
Matthew 12:34-35
Matthew 23:27-28
27 "A curse on you, you hypocritical scribes and Pharisees, for you are like white-washed tombs, which look beautiful on the outside, but inside are full of dead people's bones and everything that is unclean!
28 So you, too, on the outside seem to people to be upright, but inside you are full of hypocrisy and lawlessness.
Romans 3:4
4 Not at all. Let God prove true, though every man be false! As the Scripture says, "That you may prove yourself upright in words you speak, and win your case when you go into court."
5 So the tongue, too, is a little organ but can boast of great achievements. See how a spark, ever so tiny, can set a vast forest on fire!
6 And the tongue is a fire, and takes its place among the parts of our bodies as a world of evil; it soils the whole body and sets on fire the circle of man's nature, and itself is set on fire by hell.
7 For every kind of beasts and birds, of reptiles and sea animals, can be, or have been, tamed by man;
8 but the tongue no human being can tame. It is an evil incapable of being quieted, full of deadly poison.