Luke 2:42-44

New American Standard Bible

⁴² And when He was twelve years old, they went up there according to the custom of the feast; ⁴³ and as they were returning, after spending the ^(A)full number of days required, the boy Jesus stayed behind in Jerusalem, but His parents were unaware of it. ⁴⁴ Instead, they thought that He was somewhere in the caravan, and they went a day’s journey; and then they began looking for Him among their relatives and acquaintances.