Matthew 15:11, 17-19

What truly contaminates a person is not what he puts into his mouth but what comes out of his mouth. That’s what makes people defiled.”

Is it hard to understand that whatever you eat enters the stomach only to pass out into the sewer? But what comes out of your mouth reveals the core of your heart. Words can pollute, not food. You will find living within an impure heart evil ideas, murderous thoughts, adultery, sexual immorality, theft, lies, and slander.