Luke 2:43-45

King James Version

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.

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.

⁴⁵ And when they found him not, they turned back again to Jerusalem, seeking him.