I think you are expected to trust the book of Acts because it is part of your own Bible aka the NT. Then again, why do I care? I am not a Christian!
Not really. It may be part of the NT, but being Christian doesn't mean that I have to have trust in it. I don't think the Bible is literally true, or the literal word of G-d, which allows me to treat it as a collection of books, and those books individually. I treat the books as I would any other historical work. The idea of taking the Bible literally true, at least among Christians, is a relatively new idea that started around the 1900s, as a way to fight back against the critical scholarship what was going at that time.
Not a single book in the NT was written before Paul started preaching his gospel as the whole of the NT, including the book of Acts was written from the Letters of Paul. Therefore, afterwards. Besides, if you don't find relevance in the book of Acts, you might as well drop the assumption that Jesus was son of God. (Acts 9:20)
Not really. Three issues here. First, while we don't have any NT works preceding Paul, that doesn't mean all that much. Paul wasn't writing scripture. Paul was writing letters. He was corresponding to others. He had no idea his works would be collected and kept. And not all of his works were. We are missing at least three letters from Paul, that we know of as he referenced them, and we are missing all the letters addressed to Paul. So we are only seeing one side of the conversation.
So we know Paul wrote more, and we can assume others wrote as well. We can assume that because the author of Luke/Acts tells us this. He states clearly that he is compiling various written and oral records in order to compile his work. So we know there was other literature as well. The big thing though is that we are talking about an oral society. The vast majority of the population was illiterate. So they passed on information orally. While Paul may be the first source we have today, it doesn't mean he was the first that we had. In fact, Paul even tells us that he relied on some oral sources as well.
Second, the NT wasn't taken from the letters of Paul. There is absolutely no evidence for that. It is somewhat possible that maybe the author of Luke/Acts used Paul's letters as a source, but he also used many other sources, and at times, contradicts what Paul said. The Gospels show no awareness of Paul though, and Paul doesn't even deal with the vast majority of what is in the Gospels, so it wouldn't make sense for them to borrow from Paul. Many of the author NT writers also seem unaware of Paul, or add to the conversation things that Paul never mentioned. So no, nothing really was written from the Letters of Paul.
Third, Acts isn't the only work that says that Jesus was the son of G-d. The Gospels beat them to that. More so, I don't accept that Jesus was literally the son of G-d, so I can dismiss it.
There were no Jewish-Christians or Christian-Jews in Rome or anywhere. One is either a Jew or a Christian. Your reference to Jewish-Christians remind me of the "Jews-for-Baal" of the time of Elijah who insisted on holing their Jewish identity while practicing the pagan religion of Baal. (I Kings 18:21)
There were Jewish-Christians. They were Jews who followed Jesus. Scholars readily accept that as we can look at people like James, the brother of Jesus, a Jew, or Peter, a Jew, or Paul, a Jew, who followed Jesus. We have evidence of such groups existing until at least the fourth century.
They were simply Jews who believed that Jesus was the messiah, and thus followed him. Not at all like Jews-for-Baal, as Baal was a different god. Jesus wasn't seen as a god, but as the messiah.
Paul invited the Jewish leaders to visit him. When they became aware of his anti-Jewish gospel, little by little they all left him to his housing arrest. Then, he fell into a miserable life akin to schizophrenia and died within two years.
There is nothing to suggest that. He didn't have an anti-Jewish gospel, he was a Jew himself, and was proud of that fact. And there is no evidence that the Jewish leaders left him, or that he fell into a miserable life. Acts leaves it off with little information, but does tell us that over the two years, he was visited by Jews and had conversations with them.
Jesus did not have Gentile followers on a regular basis. In fact, he did not like Gentiles if you read Mat. 10:5,6. The Jewish leaders in Rome simply showed no concerned for Paul. They attended to Paul's invitation but only in the hope to meet a Rabbi from Jerusalem . They got disappointed and left him alone.
Again, two different audiences. Paul had a message for Gentiles, actually he took the message of Jesus to the Gentiles. Jesus spoke to Jews. I've said that all along.
As for the Jewish leaders, the source that we have, one that you have quoted numerous times, as in Acts, tells us that the Jewish leaders had no problems with Paul, and met with him from time to time. It doesn't say anything about being disappointed in him, or that they hoped to meet a Rabbi from Jerusalem. In fact, if we look at Paul's letter to the Romans, we can clearly see that he introduced himself before ever traveling to Rome. So they would have known who they were meeting.
Those so-called Gentiles were no longer Gentiles but converts of Peter into the Jewish Sect of the Nazarenes. That's what Paul was after because, he had proved not to be able to raise a church of Gentiles from scratch. So, he played the Cuckoo bird to overturn the Nazarene Synagogues into Christian churches.
You have no evidence for that. First of all, Acts tells us that Paul was the ringleader of the Nazarenes, not Peter. Second, we know almost nothing about the Nazarenes, as they are only briefly mentioned. To state anything else is simply making things up.
The Gentiles were still Gentiles. They never adopted Judaism. They were never circumcised, they didn't follow Jewish law.
As for overturning Nazarene Synagogues, again, no evidence at all. There is no evidence for that claim, especially when we are told that Paul, from the get go, was the leader of the Nazarenes.
Paul had become religiously famous although as a Cuckoo bird. The Jewish leaders in Jerusalem rather rejected him on the basis that he could not even be a disciple, let alone an apostle. (Acts 9:26) Regarding what you say above that they sent some of their own to go with Paul, you are not focusing on what you read. Paul was there but they used Silas to take a letter to the Nazarenes who had decided to follow Paul, that they should at least keep the Noahide laws. It means that Jerusalem had released them back into their previous life as Gentiles. They were sure that Paul would trash the letter; so, they sent it through Silas a Nazarene from Jerusalem.
You're taking Acts 9:26 out of a historical context. This is shortly after Paul had converted, as in, just previously, he was persecuting those of the Jesus movement. So yes, at first he was rejected because they were afraid Paul was trying to persecute them.
If you read the very next verses, we are told that he won them over, and was invited to meet with them. That after they learned what he was preaching, and learned more about him, they were receptive to him. You need to take things in context.
There is no evidence that Silas was a Nazarene, and again, we are told that Paul was the leader of the Nazarenes. That is almost the only thing we know about the Nazarenes. To say more about them is making things up.
There is no evidence about what you said about Paul trashing the gospel, or the Noahide laws, or the such. You're adding things that aren't there.
He lied many times in different forms. Can you quote when he, officially, went to the Gentiles? No, you can't. Why? Because he never went to the Gentiles. Unless to the Gentiles converted by Peter and the other apostles.
I can quote it actually. Galatians 2:8 tells us, from Paul's own words, that he was called to go to the Gentiles. Acts 9:15 tells us that Paul was called to speak to the Gentiles. Galatians 1:15-16 Paul states that he goes to Gentiles, as in those he is talking to. Basically every letter he has is addressed to Gentiles (besides Romans, where he is talking to a church he has never been to before, and asking them just to receive him).
I know that! But when they were written, they became known as the gospel of Paul. The Tanach too was written many years before Jesus and became known as the gospel of the Jews. Jesus was a Jew; so, the gospel of Jesus. Paul was a Jew until he founded an anti-Jewish religion aka Christianity. (Acts 11:26) Afterwards, he had lost his Jewish identity. There is more than one way for a Jew to lose his Jewish identity and, to embrace another faith besides Judaism is one of them.
No. Paul was a Jew. He was a Jew until he died. He never founded Christianity (it simply states that the term Christian was first used in Antioch. It does not state that Paul started the movement). In fact, Paul couldn't start a movement that was already started.
He never lost his Jewish identity. He continues to speak of it throughout his ministry. I suggest maybe you read Paul to see that, instead of reading Acts.