Today’s story throws light on the life of the Holy Family. No travelling as a nuclear family, but a great caravan from Nazareth. The walk men together and the women walk together, and the children wandering between them. Such a large group that Mary and Joseph didn’t notice they hadn’t got their boy. Imagine the worry at having lost him, especially as it took three days to find him.
Pious Christians later developed this story to have Jesus teaching the learned men in the Temple, but much more likely the adolescent Jesus was learning from those who really knew their tradition. He obviously impressed them with his grasp and ability to understand the things of God.
Source: Jesuits in Britain