Where did Luke get his Bethlehem story from?

Previously on RejectingJesus:

Matthew creates his nativity story, specifically Jesus’ birth in Bethlehem, from Micah 5.2, which prophesies that a ‘ruler over Israel’ will be born there. This prophecy is imposed on Jesus who was not a ruler of Israel – though he may have aspired to be – and certainly was not the Messiah envisaged by the creators of such prophecies. I suggest that subsequently, Luke embroidered Matthew’s fairly basic story and contrived to get Jesus born in Bethlehem by inventing a Roman census that required his parents to travel there.

A Christian commenter (let’s call him Don) then challenged this scenario by claiming, without offering any evidence, that Luke did not have access to Matthew’s gospel, so must have known that Jesus was born in Bethlehem from an independent source. (Christians are fond of attributing suspect gospel material to oral traditions and the hypothetical Q. Don is no exception.)

In fact, a number of scholars, including Michael Goulder, Mark Goodacre, Richard Carrier and others, think that Luke did know Matthew’s gospel. This is the so-called Farrer hypothesis, named after Austin Farrer who first proposed the idea in 1955. As well as his plagiarising 55% of Mark, these scholars show that Luke also used material from Matthew, including the Bethlehem story. The structure of Luke’s version and some of his phrasing is identical to Matthew’s. It is unlikely this would be the case if Luke wasn’t lifting directly from Matthew’s account.

Luke goes further and replaces some of the details in Matthew’s story that don’t suit his purpose (e.g. the magi) with his own (the shepherds), which is why the two accounts diverge. Nonetheless, both versions of the story stem from the ‘prophecy’ in Micah 2.5. Luke doesn’t cite it explicitly but then he is non-specific elsewhere in his gospel about events that supposedly fulfil prophecy. Unlike Matthew, Luke was writing for a gentile audience who would not be as familiar with Jewish scripture; he didn’t need to be as explicit about the source for his stories that were based on these scriptures. Nonetheless, the two nativity accounts, Matthew’s and Luke’s, likely had the same basis (the Micah prophecy) with Luke adapting the narrative that Matthew had already created from it. Moreover, the differences in detail between Matthew and Luke’s accounts demonstrate clearly that both authors were inventing their respective stories. As Neil Godfrey puts it,

Luke, attempting to adapt Matthew’s Bethlehem as the place of birth of Jesus to his more universalist theme, feels obliged to concoct a silly story of everyone being required by imperial edict to return to their places of birth for a special tax registration. Not to mention the necessary anachronism of his Quirinius timing, too. It is not hard to see that Luke is struggling to incorporate Matthew’s Bethlehem setting into his own tendentious narrative.

It’s possible, of course, that all of the scholars who think Luke knew Mathew’s gospel are wrong, but even so, this doesn’t rescue Luke’s nativity from its fictional moorings.

First, it could be argued that both Matthew and Luke knew about Jesus’ birth from their respective sources. Our Christian commenter would say, and does say, that the details of Jesus’s birth were well known in the early, pre-gospel cult (he disputes that Jesus was in any way famous beyond this select few) and that these details were preserved in a reliable oral tradition or in Q. If the former was the case, however, the two nativity accounts would not differ to the extent they do, unless the oral traditions weren’t as reliable as our commenter likes to say they were. On the other hand, Q, if it existed at all, was comprised primarily of sayings and certainly did not include any Bethlehem narrative.

Second, Don will no doubt say that all of this is mere atheist grumbling and is therefore entirely fallacious. He believes that God inspired his anonymous agents to use prophecy, foreshadowing and typology to point the way to Jesus and his birth in Bethlehem. Don believes that both Matthew and Luke had independent knowledge of Jesus’ birth there, which means it must’ve been his birthplace. Of course it indicates nothing of the sort. If Matthew and Luke settled on Bethlehem independently, it would demonstrate only that they had independent knowledge of Micah 2.5.

Third, if the circumstances of Jesus birth in Bethlehem were so remarkable – miraculous, even – then why does Mark not mention them? According to Don (though no serious scholar shares his view) Mark’s gospel is comprised of the recollections of Peter, Jesus’ closest, dim-witted pal in the synoptic gospels. Did Jesus never mention his birth to Peter? Did Peter then fail to pass the details on to Mark? Did Jesus’ mother Mary, who treasured memories of the miraculous birth, never allude to them when she and Peter reminisced together over a glass of water wine? (Yes, Don, I know this is in John’s gospel, but they are meant to be the same characters.) Why does the Bethlehem birth only emerge in Matthew, who built much of his gospel around ‘prophecies’ from scripture, and in Luke, who, in all likelihood, copied from him?

We can be fairly certain that Jesus was not born in Bethlehem. Someone somewhere, other than these two, would have mentioned it outside of symbolic stories that owe far more to myth and legend than they do to fact.