I can't quite wrap my head round this one. How do we know so much about the birth of Christ, but almost nothing about his growing up?
As I see it, there were only a handful of people at the birth, Mary, Joseph, some shepherds and possibly the owner of the stable. That's been documented and detailed in the gospels in reasonable detail, so someone there must have provided details.
If they realised that His birth was significant then I can understand the sharing of the facts of his birth, but if that was the case then why not more detail about His growing up?
If they didn't realise until He started his ministry that he was the same Jesus, and then connected the stories together, then there wouldn't have been any real oral traditional stories of his birth. How was there such a detailed narrative about it? It doesn't make sense to me to document only the birth and then nothing until the ministry.
I understand the way stories were handed down, and I understand that the gospels were written later, but I just can't reconcile the above.