You're correct to say it's an apparent misunderstanding. The ones with the misunderstanding are those who are ignorant to the fact that Jesus is confirming all that Moses and the prophets wrote.
I could also point out that you changed the word "fail" to "perish" for a reason. Yes..the scriptures does reiterate that; if a dot or comma changes from what's written, then God's words to would fail. You, like many are focused on the glow of the ten and not understanding references to the entire scriptures.
Did Moses write in the law that the covenant is the ten commandments? YES
Is it not also spelled out in Jeremiah that God will give a new covenant unlike the one given the fathers? YES
THESE 2 MAJOR FACTS ARE ARGUED AWAY FROM WEAK CHRISTIANS. but it's written.
Luke16:16-17 Jesus is confirming that God's word (written in the law) will not fail. Paul also confirms that, written in the law and the prophets; God will call for righteousness without the law.
Rom 3:21 But now the righteousness of God without the law is manifested, being witnessed by the law and the prophets
Really?? If you don't add to where Paul taught about being
free from the law. You should be saying that the law cannot make you free from sin or death. Somehow you're teaching on the law's relationship to salvation in order to uphold your doctrine over what is written. (ripping my tunic)
Rom 8:2 For the law of the Spirit of life in Christ Jesus hath made me free from the law of sin and death.
Rom 8:3 For what the law could not do, in that it was weak through the flesh, God sending his own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh:
The truth is not that complicated. Being free from the law and being dead to the law is really about the covenant you're under. It's explained by Paul as: your wife being dead and you're married to another. Somehow you see the law alive and don't understand the one who died for you. Dude you cant have two lovers.
Rom 7:4 Wherefore, my brethren, ye also are become dead to the law by the body of Christ; that ye should be married to another, even to him who is raised from the dead, that we should bring forth fruit unto God.