The Synoptic Gospels and the Gospel of John

Is this just a story that sort of develops out of nowhere? I mean, if this event didn't occur, it shows up in all of these gospels. It occurs because people are saying, I've seen Jesus. The other thing we haven't pointed out is when you compare their narratives of the resurrection, they're more contradictory than the stories of the birth narratives. We don't have a consistent independent narrative. What we have are independent narratives that contradict each other.