Bart Ehrman, an influential NT scholar, at https://ehrmanblog.org/was-paul-the-founder-of-christianity/ says the following.
"Jesus preached that the Kingdom of God was soon to arrive with the appearance from heaven of the Son of Man. People needed to prepare for that imminent catastrophic event by turning to God and living in the ways that he decreed through the proper observance of the Torah, principally by loving (and trusting) God above all else and by loving their neighbors as themselves. Those who did so would survive the coming onslaught and would be brought into the Kingdom.
Paul agreed that there was an imminent disaster to take place. But in his view, that would happen when Jesus himself arrived from heaven in judgment. The way a person would survive the onslaught was not by obeying the Law of God or by loving their neighbors as much as themselves. Salvation would come only by believing in Christ’s death and resurrection.
... In other words, Jesus preached about God and his coming Kingdom; Paul preached about Christ and his death and resurrection. Important similarities, yes; but also fundamental and crucial differences."
Of the four gospels in the NT it seem to me that the Gospel which is attributed as being according to Matthew is the one which comes the closest to saying what the entirely human Jew named Jesus taught. I also think it best represents the teachings of Jesus than any of the letters attributed to Paul (and according to Ehrman and other NT scholars many of the letters attributed to Paul are actually forgeries instead of being written by Paul).
At https://www.npr.org/transcripts/300246095 Bart Ehrman discusses his book called How Jesus Became God: The Exaltation of a Jewish Preacher from Galilee. Ehrman says the following.
"The earliest Christians thought that Jesus had been taken up into heaven and then made a divine being and that he was coming back. And they thought it was going to happen very soon. ...
Well, what I argue in the book is that during his lifetime, Jesus himself didn't call himself God and didn't consider himself God and that none of his disciples had any inkling at all that he was God. The way it works is that you do find Jesus calling himself God in the Gospel of John, our last Gospel. Jesus says things like: Before Abraham was, I am, and I and the father are one, and if you've seen me, you've see the father.
These are all statements that you find only in the Gospel of John, and that's striking because we have earlier Gospels, and we have the writings of Paul, and in none of them is there any indication that Jesus said such things about him. I think it's completely implausible that Matthew, Mark and Luke would not mention that Jesus called himself God if that's what he was declaring about himself. That would be a rather important point to make.
So this is not an unusual view among scholars. It's simply the view that the Gospel of John is providing a theological understand of Jesus that is not what was historically accurate. ...
And so when Jesus told his disciples that he himself was the messiah, he was saying that in the future, when God establishes the kingdom once more, I myself will be the king of that kingdom. And so it's not that the messiah was supposed to be God. The messiah was not supposed to be God. The messiah was a human being who would be the future king, and that's probably what Jesus taught his disciples that he was."
At https://www.npr.org/2020/03/31/824479587/heaven-and-hell-are-not-what-jesus-preached-religion-scholar-says Ehrman discusses his book called Heaven and Hell: A History of the Afterlife. There he says the following.
"Our view that you die and your soul goes to heaven or hell is not found anywhere in the Old Testament, and it's not what Jesus preached. I have to show that in my book, and I lay it out and explain why it's absolutely not the case that Jesus believed you died and your soul went to heaven or hell. Jesus had a completely different understanding that people today don't have. ..
EHRMAN: I think one of the hardest things for people to get their minds around is that ancient Israelites and then Jews and then Jesus himself and his followers have a very different understanding of what the relationship between what we call body and soul. Our view is that we - you've got two things going on in the human parts. So you have your body, your physical being, and you have your soul, this invisible part of you that lives on after death, that you can separate the two and they can exist - the soul can exist outside of the body. That is not a view that was held by ancient Israelites and then Jews, and it's not even taught in the Old Testament.
In the Old Testament, what we would call the soul is really more like what we would call the breath. When God creates Adam, he creates him out of earth, and then he breathes life into him. The life is in the breath. When the breath leaves the body, the body no longer lives, but the breath doesn't exist. We agree with this. I mean, when you die, you stop breathing. Your breath doesn't go anywhere. And that was the ancient understanding, the ancient Hebrew understanding of the soul, is that it didn't go anywhere because it was simply the thing that made the body alive.
And so in the Old Testament, there's no idea that your soul goes one place or another because the soul doesn't exist apart from the body. Existence is entirely bodily. And that was the view that Jesus then picked up. ...
EHRMAN: Right. So this is a really important shift for understanding both the history of later Judaism and the history of later Christianity and the historical Jesus. About 200 before Jesus was born, there was a shift in thinking in ancient Israel that became - it became a form of ideology, a kind of religious thought that scholars today call apocalypticism. It has to do with the apocalypse, the revelation of God. These people began to think that the reason there is suffering in the world is not what the prophets had said, that it - because people sin and God is punishing them; it's because there are forces of evil in the world that are aligned against God and his people who are creating suffering. And so you get these demonic forces in the world that are creating misery for everyone.
But they - these apocalyptic thinkers came to think that God was soon going to destroy these forces of evil and get rid of them altogether, and the world would again return to a utopia. It'd be like paradise. It'd be like the Garden of Eden once more. The people who thought that maintained that this Garden of Eden would come not only to people who happened to be alive when it arrived; it was going to come to everybody. People who had been on the side of God throughout history would be personally raised from the dead and individually would be brought into this new era, this new kingdom that God would rule here on Earth." ...
EHRMAN: Yeah. That became a view somewhat in Judaism, and it became a very pronounced view in Christianity. The - after Jesus. Jesus himself held to the apocalyptic view that I laid out. He taught - his main teaching is that the kingdom of God is coming. People today, when they read the phrase kingdom of God, they think he's talking about heaven, the place that your soul goes to when you die. But Jesus isn't talking about heaven because he doesn't believe - he's a Jew - he doesn't believe in the separation of soul and body.
He doesn't think the soul is going to live on in heaven. He thinks that there's going to be a resurrection of the dead at the end of time. God will destroy the forces of evil. He will raise the dead. And those who have been on God's side, especially those who follow Jesus' teachings, will enter the new kingdom here on Earth. They'll be physical. They'll be in bodies. And they will live here on Earth, and this is where the paradise will be. And so Jesus taught that the kingdom of God, this new physical place, was coming soon, and those who did not get into the kingdom were going to be annihilated.
What ends up happening is that, over time, this expectation that the kingdom was coming soon began to be questioned because it was supposed to come soon and it didn't come soon, and it's still not coming, and when is it going to come? And people started thinking, well, you know, surely I'm going to get rewarded, you know, not in some kingdom that's going to come in a few thousand years, but I'm going to get rewarded by God right away. And so they ended up shifting the thinking away from the idea that there'd be a kingdom here on Earth that was soon to come to thinking that the kingdom, in fact, is up with God above in heaven. And so they started thinking that it comes at death, and people started assuming then that, in fact, your soul would live on.
It's not an accident that that came into Christianity after the majority of people coming into the Christian church were raised in Greek circles rather than in Jewish circles because in Jewish circles, there is no separation of the soul and the body. The soul didn't exist separately. But in Greek circles, going way back to Plato and before him, that was absolutely the belief. The soul was immortal and would live forever in Greek thinking. And so these people who converted to Christianity were principally Greek thinkers, they thought there was a soul that live forever. They developed the idea, then, that the soul lived forever with God when it's rewarded."
Folks note that what is being said above are the teachings of Bart Ehrman, an influential NT scholar; they are not the words of the WT though in number of respects Bart is teaching the same as the WT (and in some other respects he is teaching the same as atheistic naturalists [Bart now is an agnostic atheist]).
Folks, please read the rest of what Bart Ehrman says at https://www.npr.org/2020/03/31/824479587/heaven-and-hell-are-not-what-jesus-preached-religion-scholar-says . It is extremely insightful. When you do so note that he says the following.
"And the other interesting thing is that what the Gnostics did, by
reading their ideas into Jesus, is also what the Orthodox Christians
did, by putting words in Jesus' lips that supported their ideas of
heaven and hell. And so in our various Gospels, you have Jesus saying
all sorts of things that are contradictory because different people are
putting their own ideas onto his lips."