Porque77
The Gospel is God's Law
Jesus can't abolish what G-D said. That within itself is a great insult to G-D.
Jesus did not abolish what God really said. What Jesus abolished of the Old Testament, is what God had not actually said, namely, the precepts of men, because Jesus did not come to abolish the true Law of God.
Jesus Christ tell us that the true Law of God is this:
"All things whatsoever ye would that men should do to you, do ye even so to them: for this is the law and the prophets" (Matthew 7: 12).
Therefore, what is really a great insult to God, is to contradict the words of Jesus Christ, who said that the God's Law is the Law that He taught us in the Gospel. What is a great insult to God, is to say that the law of God are the commandments of the Old Testament that Jesus Christ abolished, which are only really precepts of men, for that reason Jesus Christ abolished them.