It is a popular myth that
The Bible says the exact opposite:
For a thorough defense of this contrast, see Jesus and the Law of Moses (Torah). See also Why Jews Don't Believe In Jesus.
There's a lot of heated debate about the meaning of those two Greek words. What do they mean? You don't have to know Greek to figure it out. What Jesus is saying is that He came to create conditions in which the follower of Christ is committed to obeying the law and the prophets, and teaching others to obey them as well. Some anti-theonomists claim that Jesus "fulfilled" God's Law for us, therefore we don't have to keep it (compare Hodge above). Sounds like the Pharisees, who said it was enough to keep their own man-made traditions instead of God's Law. The next verse makes clear what the Greek words mean:
19 Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
"Doing" and "teaching" are not things Jesus came to destroy or to abrogate. He came to fulfill the prophecies of Jeremiah and Ezekiel, of making a people for Himself who would be heartfelt Theonomists.
I've heard J.D. Hall on more than one video describe Bahnsen's exposition of Matthew 5:17-19 in Theonomy in Christian Ethics as taking up "half the book." If you have your copy of Bahnsen's book, place one finger at page 39, where Bahnsen begins his exposition of Matthew 5:17-19, and another finger at page 86, where he finishes looking at that passage. Hold all those pages between your thumb and index finger. Does it look like "half the book?" Maybe it seems like "half the book" to anti-theonomists because Bahnsen put "lotsa Greek stuff" in that chapter. (And they probably didn't read the other "half" either.)
Many people think that Theonomists are "Pharisees" and "legalists." But Jesus says His disciples are more righteous (Law-abiding) than those who use God's Word for their own selfish purposes:
20 For I say unto you, That except your righteousness shall exceed the righteousness of the scribes and Pharisees, ye shall in no case enter into the kingdom of heaven
It is one of the biggest anti-Theonomic myths that the Pharisees were pro-nomian. To the contrary, the religious leaders of Jesus' day were "hypocrites," as Jesus repeatedly said. Outwardly they postured as Theonomists, but they were actually committed to evading God's Law, not putting it into practice. The legalistic religious leaders were the enemies of God and the enemies of Theonomy:
Theonomists are not Pharisees. Theonomists are "Bibliolators." They are the New Covenant believers Jeremiah and Ezekiel described.