Red your logic is flawed...the New Testament is way more than Paul’s letters...Jesus is the way the truth and the light...Paul never claimed that...however, when Paul’s eye’s were opened on the way to Damascus...he learned the Truth about Jesus, the Son of God...that was that we are all saved by Grace that believe in him...why would any Christian, who in fact does enter Heaven, question anything that our Lord has decided is welcome in his Kingdom...in fact for all Christians, we should pray that all accept his Word and enter the Kingdom of God!
The last chapter of Acts, closing verses:
23 And when they had appointed him a day, there came many to him into his lodging; to whom he expounded and testified the kingdom of God, persuading them concerning Jesus, both out of the law of Moses, and out of the prophets, from morning till evening.
24 And some believed the things which were spoken, and some believed not.
25 And when they agreed not among themselves, they departed, after that Paul had spoken one word, Well spake the Holy Ghost by Esaias the prophet unto our fathers,
26 Saying, Go unto this people, and say, Hearing ye shall hear, and shall not understand; and seeing ye shall see, and not perceive:
27 For the heart of this people is waxed gross, and their ears are dull of hearing, and their eyes have they closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and should be converted, and I should heal them.
28 Be it known therefore unto you, that the salvation of God is sent unto the Gentiles, and that they will hear it.
29 And when he had said these words, the Jews departed, and had great reasoning among themselves.
30 And Paul dwelt two whole years in his own hired house, and received all that came in unto him,
31 Preaching the kingdom of God, and teaching those things which concern the Lord Jesus Christ, with all confidence, no man forbidding him.
God knew the Jews would reject the Messiah, foretold by Isaiah, centuries before. But to them first salvation was offered, thus fulfilling a promise. Then it was proclaimed to the Gentile nations, whom God knew would accept the message and relay it around the world. .....