Luke 2:43 YLT

⁴¹  And his parents were going yearly to Jerusalem, at the feast of the passover,

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,

⁴⁵  and not having found him, they turned back to Jerusalem seeking him.