Can you name some things in the Bible that have never happened?

Sure. My favourite go-to is the exorcism of the Gerasene demoniac. For those who aren’t as up to speed, the potted version goes like this:

Jesus travels across the sea to the land around Gersene and encounters a man* possessed by a demon. He tries to speak the demon and demon replies "My name is Legion, for we are many". Jesus then throws the demon out of the man into a herd of 2,000 pigs. The pigs are then driven into the sea and die, killing the demon.

However, there are a few problems with the story:

In the middle of his ministry at Nazareth Jesus is said to have suddenly upped and gone to the Gerasene region - over a hundred miles away - for no apparent reason. Done his quick exorcism and then come right back home. There is nothing else in the Biblical account of Jesus which shows him travelling anywhere until his final pilgrimage to Jerusalem. It is geographically jarring.

There is no history of swine herding in that area of the Middle East. Not then or at any time before then - or indeed for centuries afterwards.

Gerasa is absolutely nowhere near the sea. There is certainly no way to travel there from Nazareth “by sea”.

Nothing about the story makes sense within either the Biblical or the historical narrative. There are also a number of inconsistencies between the different Gospel accounts.

However: the Biblical account does bear a lot of similarities to older Jewish traditions of exorcism. It also bears more than a passing similarity to the tales of massacres of villagers by Roman legions in the region over a century before. It isn’t too big a leap to assume that the account of Jesus’s life got conflated with early narratives around massacres and wrapped up with Jewish traditions of exorcism to come up with an entirely story that got shoved clumsily (and improbably) into the Gospels.

Interestingly I first learned the story of the exorcism of the Gerasene demoniac from the Bishop of Hong Kong. And he used the story as a cautionary tale not to take every word of the Bible literally, but to carefully weigh them before putting too much stock in them. Not what I expected to hear on a Sunday morning sermon.

* In Luke it is two men possessed by demons. But same basic story.