Luke 2:42-47

42And when He was twelve years old, they went up to Jerusalem, according to the custom of the Feast;

43and as they were returning [to Nazareth], after spending the required number of days [at the Feast], the boy Jesus remained behind in Jerusalem. Now His parents did not know this,

44but supposed Him to be in the caravan, and traveled a day’s journey; and [then] they began searching [anxiously] for Him among their relatives and acquaintances.

45When they did not find Him, they went back to Jerusalem looking for Him [everywhere].

46Three days later they found Him in the [court of the] temple, sitting among the teachers, both listening to them and asking them questions.

47All who heard Him were amazed by His intelligence and His understanding and His answers.