Jesus, in Matthew 12:34, says that “out of the abundance of the heart the mouth speaks.” What is really inside of a person comes out of their mouth. You will know the tree by the fruit it bears. That’s a more reliable indicator than a person’s eyes. He says in v.35 ” The good person out of his good treasure brings forth good, and the evil person out of his evil treasure brings forth evil.” In Matthew 15 Jesus is responding to the accusation that his disciples eat without washing their hands. He says what gets eaten goes into the stomach and is later expelled; it’s what comes out of a person mouth, not what goes in, that defiles. What comes out of the mouth shows us what a person is really made of.
The nature of sin is that it comes from the inside. We all have a heart problem. Consider the 10 Commandments. The last commandment is what some in our culture would call a victimless crime. The sin of coveting takes place on the inside, even if there is no outward manifestation. Jesus carries this idea into the New Testament in his sermon on the mount. If you look at a woman with lustful thought adultery has already been committed in your heart. The things we think can be sinful, not just the things we do. And God sees the thoughts and intents of our heart. “Then desire when it has conceived gives birth to sin, and sin when it is fully grown brings forth death.” -James 1:15
Violent movies, dirty magazines or suggestive lyrics may influence a person, but sin comes out from within. The heart of our problem is…well, in our hearts.
Finally, brothers, whatever is true, whatever is honorable, whatever is just, whatever is pure, whatever is lovely, whatever is commendable, if there is any excellence, if there is anything worthy of praise, think about these things. -Phillipians 4:8
We all have a heart problem. Have you met the great physician?