Luke 2:42-44

Young's Literal Translation

⁴² and when he became twelve years old, they having gone up to Jerusalem, according to the custom of the feast,

⁴³ and having finished the days, in their returning the child Jesus remained behind in Jerusalem, and Joseph and his mother did not know,

⁴⁴ and, having supposed him to be in the company, they went a day's journey, and were seeking him among the kindred and among the acquaintances,