The Book of Mark or the Gospel According to Mark is probably the on book in the entire Bible of any value.
The Book of Matthew or the Gospel According to Matthew (Matthias) is a plagiarized version of the Book of Mark intended for Jewish readers.
The Book of Luke or the Gospel According to Luke is a plagiarized version of the Book of Mark intended for Roman readers.
The Book of John or the Gospel According to John is a plagiarized version of the Book of Mark with some added make-believe miracles and the deifying of Jesus.
Jesus was a faith healer who had a psychedelic experience induced from starvation and dehydration. This led Jesus to being Enlightened. Jesus used the Jewish mythology to teach his fellow Jews what he had learned. The Book of Mark sums this up nicely.
So, in short, whatever is in Mark is more likely to be true if true. By the time the Book of John rolls around a lot of magical nonsense has been added to the story and the whole point of Jesus life and ministry is glossed right over in favor of "Jesus is God in human form" and "salvation is all that matters".
To the point - Jesus is not the Messiah the Jews were anticipating. If Jesus were the Jews would have overthrown the Roman Empire and Jesus would have been the King of the Earth right then and there.