What has Ananus got to do with Jesus apart from the fact that you want to use the story to show Mark was written after 70 AD. But Ananus was a Jewish prophet who was filled with the Holy Spirit at Pentecost and prophesied and was put on trial and beaten for no reason. This also shows what Jerusalem had done to the prophets before that. You also ignore the true prophecy Ananus gave from God.
As I said, no relevance other than that Josephus' account of Jesus son of Ananus' trial was not available till 75 CE and was used by the author of Mark in his writing of the trial of Jesus.
Paul certainly would not have become a Christian if he knew that Jesus had not even existed.
The point is that assuming he existed, he exists in oral versions that at the least led to five incompatible versions in the NT alone (though Matthew's Jesus is fairly similar to Luke's).
Jesus pre existed and created the universe and became a human.
No, only the Jesuses of Paul and of John did that. Mark's Jesus was an ordinary Jew till adopted by God, and there's no hint in Matthew or Luke that their Jesuses had existed in any other form than that resulting from divine insemination on that particular occasion. And certainly none of Mark's, Matthew's or Luke's Jesuses created the material universe ─ the idea of pre-existing in heaven and of being the demiurge, the creator of the material universe, is from gnosicism and not found in the synoptics.
But the mother was a virgin'
The mother of Matthew's Jesus and the mother of Luke's Jesus were each virgins. It's an unignorable claim, so when it's not found in Paul, Mark or John, it's because no such claim is made there. As well, you shoot yourself in the foot if you also wish to claim Jesus was descended from David ─ as I said, those claims in Matthew and Luke clearly demonstrate the absurdity. And of course the mother of Mark's Jesus was an ordinary Jewess just as Mark's Jesus was an ordinary Jew till his adoption by God on the model of David.
and so no zygote was killed so that Jesus could become a human.
As I also said, my best guess is that there was an ordinary conception by a Jewish couple and Paul's and John's Jesuses became incarnated by slipping in spirit into the resulting zygote. It's a best guess because neither Paul nor John discusses how their Jesus entered the world.
Mark starts at the baptism of Jesus but Jesus is still the Son of God in Mark also.
Mark's Jesus
becomes the son of God when he's baptized and God adopts him right at the start of Mark's story ─ Mark 1:9-11. Goodness, don't you read your own book? Do you know no more about what it says than what other people have told you it says?
Jesus is also Son of David in Mark (eg Mark 10:47)
A stranger calls him 'Son of David' in Mark 10:47. He denies he's descended from David in Mark 12:35-37.
Both Genealogies make it plain that Joseph is not the father of Jesus and Lukes is logically the genealogy of Mary whose father is also called the father of Joseph in those days.
No, the genealogies in Matthew and Luke don't make it plain that Joseph is not the father of Jesus ─ those gospels make it plain elsewhere. On the contrary, each is expressly a genealogy of Joseph ─ Matthew's genealogy ends, Matthew 2:16
and Jacob the father of Joseph the husband of Mary. Luke's genealogy (written in reverse order) says Luke 3:23
Jesus [...]
being the son (as was supposed) of Joseph,
Each gospel writer has his own agenda and information to convey and they add to each other and not contradict.
No, in the places I keep pointing out to you they dang sure contradict each other.
The each have Jesus as the Son of God, and end up showing clearly that He is the divine Son of God, someone the Jews wanted to kill because He made Himself equal to God.
If you were a Jew in those days, that may have sounded quite a reasonable idea. But Jesus was God's envoy, and no more God than the US Ambassador to Germany is Joe Biden.
When on trial His claim to being Son of God was what got them in the end even though the OT clearly tells us that the Messiah would be the Son of God.
That he had the title 'Son of God' is not what we're discussing.
Certainly the letters of Paul were circulating and quoted by Church Fathers before Marcion.
That's interesting. Where can I read more about that?