Luke 2
42 And when he was twelve years old, they went up to Jerusalem after the custom of the feast.
43 Ref And when they had fulfilled the days, as they returned, the child Jesus tarried behind in Jerusalem; and Joseph and his mother knew not of it.
44 Ref But they, supposing him to have been in the company, went a day's journey; and they sought him among their kinsfolk and acquaintance.