According to Wikipedia, Jesus was born between 7–2 BC/BCE. Wikipedia goes on to say that, "While Christmas, in honor of Jesus' birth, is celebrated on December 25, there is no indication that this was his actual birthday."
Let's say it was. Say Jesus was born on December 25th of year 7 BC/BCE. So on Christmas Day in year 0, he'd have turned 7. In year 12, he'd have turned 19. One year past the draft.
Now let's see what happens if he was born on December 25th of year 2 BC/BCE. On Christmas Day in year 0, he'd have turned 2. In year 12, he'd have turned 14. That age is just after most young males hit puberty.
So, 2012 is 2000 years after Jesus either became an adolescent, or a man.
December 21, 2012 is 4 days before Christmas, our arbitrarily chosen date.
Fictional super heroes supposedly become really super when they hit puberty.
What if 2012 marks the 2000th anniversary of Jesus waking up to his capability of performing miracles?
Did that happen when he turned 14? 19?
Or was he aware all along?