Jesus learned
I have been talking a lot lately about how Biblical inerrantists are forced to twist the Bible in order to defend their doctrine about the Bible.
People with a certain way of viewing Jesus do the same to Luke's Gospel.
There is a famous story in Luke 2 about Jesus staying behind in Jerusalem when his family had gone up for a festival. In most of the artistic depictions of that story (see the one on the right as an example), in film renderings and other retellings, many Christians rewrite the story so that Jesus is teaching his elders in the temple at the age of twelve.