Israel has always understood that the five books of Moses, are the metric, the standard, by which all other scriptures are tested. It is the foundation. So whatever is built upon that foundation, must be compatible with it. It must agree with Torah. There are three levels or degrees, of inspiration. TORAH - NEVIM - KETHUVIM (Law - Prophets - Writings). No genuine prophet or apostle of YHWH, will ever teach against Torah. Paul claimed that the gentiles, replace Israel. Israel is cut off from the branch and replaced with the wild branches. He also claimed that Israel doesn't have to keep Torah anymore. Although Paul, did what he did out of pride, he did it by God's permission, in order to draw out the lost sheep of Israel from the nations/gentiles.
The lost tribes of Israel, assimilated into the nations. So God would draw out his people from the nations, by creating a gentile religion that would mimic the faith of Israel, by misreading and twisting the Torah. It would become, clearly antithetical to Torah. A lawless religion. This is attractive to the gentiles, but once the elect among the gentiles, who are Christians, find the contradictions, between Paul and Torah, they run to YHWH and His Messiah, while keeping Torah. They become part of the restored Israel.
The tares, or non-elect, will gobble up Christianity, like swine eating slop out of a bucket. They love it! The gentiles, will readily accept the idea that they don't have to keep Torah, and yet, somehow, still comprise Israel (God's elect. A nation of priests and kings, that walk in the way of His Torah/Divine Law.).
The gentiles, can believe in all types of errors, and God will pardon them through the work of Messiah, but in that group of confused gentiles, there is the wheat. The elect of YHWH. God draws them out, when they see the truth of Torah. They become aware, that Christianity is wrong, and that Israel wasn't replaced by the church. These gentiles, adopt the way of YHWH, which is His Torah, joining the commonwealth of Israel/God's Kingdom Nation.
So, Paul served a purpose. God takes that which is evil, and turns it to accomplish His will. What was meant for evil, becomes a blessing. Paul changed the gospel of the kingdom, in order to create a following of gentiles and he accomplished just that. He created Christianity. Christianity should be called "Paulianity". YHWH uses Paulianity / "Christianity", to draw out His elect from the nations. From the gentiles. He draws out the wheat from the chaff. He takes those people, who weren't Israel, and transforms them into Israel, by their love for YHWH and His Torah/Law/Divine Instructions. They seek YHWH in truth and holiness, setting themselves apart for YHWH, by the spirit and power of Messiah, hence they are declared "Israel" (The Prince Of EL), a nation of priests, that will reign over the nations with Messiah.
There is no reason for Israel, to accept a body of scripture, that contradicts, Torah. So, the only scriptures in the so called "NT", that the disciples of Jesus should value and read for their personal instruction and edification, are the NT scriptures that agree with the Hebrew bible. Any NT writing, that doesn't agree with the Hebrew bible, might have some historical value, but it is not God's word. So, I assert that the most authoritative body of writings in the NT, are the words of Jesus as recorded in the gospel of Matthew. The gospel of Matthew, was written early, by one of Messiah's twelve apostles, to Israel, in Hebrew or Aramaic (The language of Israel and Messiah). Wherever the other gospels disagree with the gospel of Matthew, the gospel of Matthew should take precedence. The way it is written in Matthew's gospel, should be considered the actual, accurate description of events.
The epistles that bear the names of the 12 apostles, should be examined as to their authenticity and concordance with Torah and the gospel of Matthew. All of the epistles, that bear the names of the 12 apostles, except 2nd Peter (a forgery, attested to not just by its content but by testimony of the early church).
Richard Bauckham writes in the HarperCollins Bible Commentary:
" 2 Peter belongs not only to the literary genre of the letter, but also to that of "testament"... In Jewish usage the testament was a fictional genre... It is therefore likely that 2 Peter is also a pseudonymous work, attributed to Peter after his death... These literary considerations and the probable date of 2 Peter... make authorship by Peter himself very improbable."
Scot McKnight, writing in the Eerdmans Commentary notes that 2 Peter
"...was probably composed within two decades after his death. No book in the Bible had more difficulty establishing itself in the canon. As late as Eusebius (d. 371) some did not consider 2 Peter to be from the Apostle or part of the canon... doubts continued for centuries (e.g., Calvin and Luther)"
McKnight adds:
" There is clear evidence that 2 Peter is either dependent on Jude or on a later revision of a tradition used by the author of Jude and then by the author of 2 Peter... The letter probably emerges from a Hellenistic Jewish context, probably in Asia."