Coronary Heart Disease is the number one cause of death in America, based upon what I’m told. I work at a hospital and come in contact with its victims quite frequently. Yet a far more massive number of people suffer from another type of “heart disease,” an internal spiritual ailment that is far grimmer and deadlier than CHD. In fact, every human being to ever live has been a victim of this spiritual “heart disease,” aside from one man. But this one man has made a way for all of us to be cured of this disease; as a matter of fact, he is the cure for this disease. I’m talking about Jesus, of course, the speaker in the following passage:
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 7:20-23 ESV)
The point of this passage, when taken in context, is to deal with the problem that some of the Pharisees had “let go of the commands of God” and began “holding on to the traditions of men” (Mark 7:8). A particular group of Pharisees was agitated that Jesus’ disciples were eating without first undergoing a ceremonial washing of their hands, and Jesus took this opportunity to confront their hypocrisy. Still, there is a solid principle we can take from Jesus’ teaching; God is concerned about the heart of man, from which all sorts of evil flow, thus defiling the individual. This principle, in one way or another, is attested to and fleshed out by hundreds of additional Scriptures (Gen. 6:5; Lev. 19:17; Num. 15:39; Deut. 8:2, 10:16, 13:3; 1 Sam. 16:7; 1 Kings 8:58; 1 Chron. 28:9; 2 Chron.16:9; Pss. 19:14, 55:15; Prov. 16:5; Eccles. 9:3, 10:2; Isa. 32:6; Jer. 5:23, 17:9; Ezek. 11:21; Matt. 13:15; Acts 7:51; Rom. 1:21, 2:29; 1 Cor. 4:5; Eph. 6:6; 1 Thess. 2:4; Rev. 2:23; etc.).
So, God is significantly concerned about the heart; he tests the hearts of men based on their external deeds, by measure of his commandments (Deut. 8:2, 1 Chron. 29:17, 2 Chron. 32:31, Ps. 7:9, Jer. 20:12, 1 Thess. 2:4, Heb. 3:8, etc.). This demonstrates the relationship between a man’s heart and his deeds; one’s behavior reflects the condition of one’s heart. Those with a pure heart will produce good deeds while those with a wicked heart will produce evil deeds. Jesus explains this with the analogy of a tree and its fruit, found in Matt. 12:33:
Make a tree good and its fruit will be good, or make a tree bad and its fruit will be bad, for a tree is recognized by its fruit. (NIV)
Obviously, the tree symbolizes our heart, while the fruit represents our external deeds or actions. Therefore, it is not our actions themselves that make us guilty, but rather, the sinful attitude hidden in our heart that produces such actions. A rejection of God occurs inside our hearts, leading to sinful behavior on the outside. This means that the deepest level of sin occurs internally; behind even the most minuscule transgressions is a root sin, found deep inside of our hearts. When we sin on the outside–say, by lying or saying cruel things to others—there is something in our heart that is spewing forth such unrighteous acts. Furthermore, whatever the root sin, residing in our heart, may be, it is ultimately a rebellion against God and His Gospel. For example, we may fail to trust in his sovereignty over a situation, or we may reject his grace, or perhaps his justice. Whenever we sin, we declare in our hearts that we do not need God (whether we realize it or not), by choosing our own selfish interests over His will. All sin, therefore, is ultimately some sort of self-worship, as we deny God the glory He is due in favor of our own way. All of this flows from an evil heart.
