Luke 2:42
“And when he was twelve years old, they went up to Jerusalem after the custom of the feast.”
Luke 2:43
“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.”
Luke 2:44
“But they, supposing him to have been in the company, went a day's journey; and they sought him among their kinsfolk and acquaintance.”
Luke 2:45
“And when they found him not, they turned back again to Jerusalem, seeking him.”
Luke 2:46
“And it came to pass, that after three days they found him in the temple, sitting in the midst of the doctors, both hearing them, and asking them questions.”
Luke 2:47
“And all that heard him were astonished at his understanding and answers.”
(interesting to think of how his teen years were though xD)