Luke 2:43-45

Darby Translation

⁴³ and had completed the days, as they returned, the boy Jesus remained behind in Jerusalem, and his parents knew not [of it];

⁴⁴ but, supposing him to be in the company that journeyed together, they went a day's journey, and sought him among their relations and acquaintances:

⁴⁵ and not having found him they returned to Jerusalem seeking him.