6 links have been added on this idea.
  1. Over three-quarters of Mark’s content is found in both Matthew and Luke, and 97% of Mark is found in at least one of the other two synoptic gospels. Additionally, Matthew (24%) and Luke (23%) have material in common that is not found in Mark.

  2. Same story – different spin – blatant that they kept all versions in there – a good way to give a bit of what everyone needs to belive, I guess.

  3. Most scholars agree that Mathew is a propaganda version of Marc that was put in its place at the start of the new testament. Not just fudging it with obvious additions that Jesus was descended from Abraham/Moses/David etc, but also that he got stuck in Egypt, was a Nazarean, and all the other stuff that needed to be ticked in order for existing Jews to accept they had a new messiah on their hands. Pretty obvious to those who actually read the bible in a historic context. Watch this https://www.youtube.com/watch?v=hCyFw3jnoUk

  4. RudeJude

    To be fair many educated jews spotted right away that Mathew just added a bunch of stuff that would allow us to follow Christ without rousing rabbis – little did they know the book they wrote was a hit with gentiles, which was a bit lucky (in that it gave rise to the biggest world religion within a few hundred years). Funny old world.