There are many charges raised against the historicity of the birth narratives of Jesus Christ. These run the gamut from objections based upon alleged contradictions to inconsistencies in the genealogies to incredulity over the possibility of a virgin birth. Rather than make a case to rebut each of these objections in turn, here I will focus upon using undesigned coincidences to note how these birth narratives of Christ have the ring of truth. How exactly do undesigned coincidences work? Simply put, they are incidental details that confirm historical details of stories across reports. I have written more extensively on how these can be used as an argument for the historicity of the Gospels: Undesigned Coincidences- The Argument Stated. It should be noted that the birth narrative occurs only in Matthew and Luke. John begins with a direct link of Christ to God, while Mark characteristically skips ahead to the action. Thus, there are only a few places to compare these stories across different reports. However, both Mark and John have incidental details which hint at the birth account. These incidental details lend power to the notion that the birth narratives of Jesus are historical events.
First, there is one undesigned coincidence that is such a gaping hole and such a part of these narratives most people will probably miss it. Namely, what in the world was Joseph thinking in Luke!? Do not take my word for this–look up Luke chapters 1-2. Read them. See anything missing? That’s right! Joseph, who is pledged to a virgin named Mary (1:27) doesn’t say anything at all about the fact that his bride-to-be is suddenly pregnant. There is no mention of him worrying at all about it.
So far as we can tell from Luke, Joseph, who we only know as a descendant of David here, is going to be wed to a virgin and then finds out that she’s pregnant. He’s not the father? What’s his reaction? We don’t find out until Luke 2, where Joseph simply takes Mary with him to be counted in the census, dutifully takes Jesus to the Temple, and that’s about it. Isn’t he wondering anything about this child? It’s not his! What happened?
Only by turning to Matthew 1:18ff do we find out that Joseph did have his second thoughts, but that God sent an angel explaining that Mary had not been unfaithful, and that the baby was a gift of the Holy Spirit. So we have an explanation for why Joseph acted as he did in Luke. Now these are independent accounts, and it would be hard to say that Luke just decided to leave out the portion about Joseph just because he wanted to have Matthew explain his account.
The genealogies of Jesus that Matthew and Luke include are different, but they reflect the meta-narratives going on within each Gospel. Luke’s narrative generally points out the women throughout in a positive light, and it is often argued that his genealogy traces the line of Mary. Matthew, writing to a Jewish audience, traces through Jesus’ legal father, Joseph. Now it could be argued that these are simply reflections of the authors’ imaginations within their fictional accounts, but surely including names with descendants tracing all the way back to Abraham and beyond is not a good way to construct a fictional account. No, Matthew and Luke include the genealogies because their accounts are grounded in history.
Interestingly, the birth narratives of Jesus also help explain the events reported in Mark and John, which do not report His birth. What of the apparent familiarity John had with Jesus in Mark 1:3ff and John 1:19ff? It seems a bit odd for John to go around talking about someone else “out there” who will be better in every way than he himself is without knowing who this other person is. Well, looking back at Matthew and Luke, we find that Mary and Elizabeth (John’s mother) knew each other and had visited each other during their pregnancy. It seems a foregone conclusion that they continued to interact with each other after the births of their sons, which would explain John’s apparent familiarity with Jesus in Mark and John.
Strangely, Mark never mentions Joseph as Jesus’ father. If all we had was Mark’s Gospel, we would be very confused about who Jesus’ father is. The oddness is compounded by the fact that Mary is mentioned a number of times. Well okay, that still seems pretty incidental. But what about the fact that Mark explicitly has a verse where he lists Mary as well as Jesus’ siblings?
Is not this the carpenter, the son of Mary and brother of James and Joses and Judas and Simon? And are not his sisters here with us?” And they took offense at him. (Mark 6:3, ESV)
This verse seems extremely weird. After all, Joseph was a carpenter (well, a more accurate translation is probably “craftsman”) and yet despite Mark explicitly using that word for Jesus, as well as listing Mary and Jesus’ siblings, we still see nothing but silence regarding Jesus’ father. Well, of course! After all, when we turn to the birth narratives in Matthew and Luke, we find that Jesus was born of a virgin. Jesus had no human father. Thus, Mark, ever the concise master of words, simply omits Joseph from details about Jesus’ life. But to not mention Jesus’ father in a largely patriarchal society alongside his mother and siblings seems extremely strange. It is only explained by the fact of the virgin birth, with which Mark would have been familiar. However, Mark didn’t see the birth narrative as important in his “action Gospel.” Only by turning to Matthew and Luke do we find an explanation for the strange omission of Joseph from Mark’s Gospel.
I have listed just a few undesigned coincidences to be gleaned from the birth narratives of Jesus. The fact of the matter is that these can be multiplied almost indefinitely if one looks at the whole of the Gospels, and even moreso if one investigates the whole Bible. These incidental details fit together in such a way as to give the Gospels the ring of truth. The way that Matthew fills in details of Luke, Mark demonstrates his familiarity with the birth narratives, and the intimate connections of Jesus and John are all cross-confirmed is both incidental and amazing. The claim is not that based upon these incidences alone the Gospel accounts are true. No, the claim is that those who challenge the truth of these accounts must account for these incidences in a way that is more plausible than that they simply occur when people relate history. It seems that the only way to do that would be to resort to outlandish narratives that involve the four authors sitting together and discussing which portions of stories to leave out so the others can fill them in. No, instead it seems much more likely that these four authors were writing what they had witnessed–or that they received from eyewitness testimony, and just as we do when recounting events (think of 9/11, for example, and the different things people remember) they wrote specific details they felt were important or part of the narrative, while the others found other things more important or had other incidental knowledge related to the events they recorded.
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