The bible also tells us this:
Matthew 15:11
What goes into a man's mouth does not make him 'unclean,' but what comes out of his mouth, that is what makes him 'unclean.'"
Matthew 15:18
But the things that come out of the mouth come from the heart, and these make a man 'unclean.'
James 3:6
The tongue also is a fire, a world of evil among the parts of the body. It corrupts the whole person, sets the whole course of his life on fire, and is itself set on fire by hell.
That's why we should read the bible and understand what it means to us so we can live a better life. and apply it to your life. It's a manual God gave us so we can have a more abundant life, and gain wisdom from it.