Proverbs 26:22 The words of a talebearer are as wounds, and they go down into the innermost parts of the belly.
23 Burning lips and a wicked heart are like a potsherd covered with silver dross.
Again we see the tongue as a way for the wicked to wound the people they come in contact with. The words they speak wound to the deepest part soul. The next verse goes on to tell us that they try to cover there their wickedness to make it look like they are as righteous as the next person. But in the end we know that something that is silver coated will soon lose its brilliance, just like the wicked will soon let their true self be seen. Lets us pray that we have the discernment to recognize people like this so we can be ready to help and pray for them.