Heart Condition

And He called the people to Him again and said to them, "Hear Me, all of you, and understand: There is nothing outside a person that by going into him can defile him, but the things that come out of a person are what defile him. If anyone has ears to hear, let him hear." And when He had entered the house and left the people, His disciples asked Him about the parable. And He said to them, "Then are you also without understanding? Do you not see that whatever goes into a person from outside cannot defile him, since it enters not his heart but his stomach, and is expelled?" (Thus He declared all foods clean.) And He said, "What comes out of a person is what defiles him. For from within, out of the heart of man, come evil thoughts, sexual immorality, theft, murder, adultery, coveting, wickedness, deceit, sensuality, envy, slander, pride, foolishness. All these evil things come from within, and they defile a person" (Mark 7:14-23)

Sin is a product of the heart. Sin doesn't defile the heart, but comes from a defiled heart. We are not sinners because we sin; we sin because we are sinners. It's a heart condition. It's called "Original Sin."