- Matthew 15:7-9 (NIV) 7 You hypocrites! Isaiah was right when he prophesied about you: 8 "'These people honor me with their lips, but their hearts are far from me. 9 They worship me in vain; their teachings are but rules taught by men.'"
What Isaiah said of the people of his own day applied to the hypocrites of Jesus' day as well, and to those of our own.
An ancient rabbi said, "There are ten parts of hypocrisy in the world, nine at Jerusalem and one everywhere else." The same might be said of much of the church. Satan has no greater allies than hypocrites who go under the guise of God's people. And hypocrites have no greater ally than tradition, because tradition can be followed mechanically and thoughtlessly, without conviction, sincerity, or purity of heart. Because traditions are made by men, they can be accomplished by men. They require no faith, no trust, no dependence on God. Not only that, but they appeal to the flesh by feeding pride and self-righteousness. Often, as in this case, they also serve self-interest.
Because traditions require no integrity of heart, they are easily substituted for true worship and obedience. That is why it is easy for people to honor God with their lips while their heart is far away from Him. And that is why ritual, ceremony, and other religious traditions are more likely to take worshipers further from God than bring them closer. And the further a person is from God, the more vain his worship becomes.
The only heart that can worship God in spirit and in truth (John 4:24) is the heart that belongs to Him; and the only heart that belongs to Him is the heart cleansed from sin and made righteous by Him. It is this divine cleansing that God has always offered to those who trust in Him. "I will give you a new heart and put a new spirit within you," He said through Ezekiel, "and I will remove the heart of stone from your flesh and give you a heart of flesh. And I will put My Spirit within you and cause you to walk in My statutes, and you will be careful to observe My ordinances" (Ezek. 36:26-27). Unless that transformation happens within a person, his righteousness cannot exceed the hypocritical and superficial righteousness of the scribes and Pharisees—in which case he can never enter the kingdom of God (Matt. 5:20).
Jesus was condemned and crucified because He exposed the vileness of religious hypocrites who rejected God's grace in favor of their own sinful precepts of self-righteous works.
There is, of course, nothing wrong with tradition as such. Many traditions help us to remember, cherish, and honor things that are noble and beautiful. But when traditions are substituted for, or in any way distort or distract from God's Word, they are an offense against God and a barrier to right worship and living. When the precepts of men are taught as doctrines, man's wisdom is elevated above God's—which is the very root of all sin. It was Satan's inducing Eve to trust her own wisdom above God's that led to the Fall and to every subsequent sin and evil in the world.
MacArthur New Testament Commentary