Luke 2:43

39When they had accomplished all things that were according to the law of the Lord, they returned into Galilee, to their own city, Nazareth.

40The child was growing, and was becoming strong in spirit, being filled with wisdom, and the grace of God was upon him.

41His parents went every year to Jerusalem at the feast of the Passover.

42When he was twelve years old, they went up to Jerusalem according to the custom of the feast;

43and when they had fulfilled the days, as they were returning, the boy Jesus stayed behind in Jerusalem. Joseph and his mother didn’t know it,

44but supposing him to be in the company, they went a day’s journey; and they looked for him among their relatives and acquaintances.

45When they didn’t find him, they returned to Jerusalem, looking for him.

46After three days they found him in the temple, sitting in the middle of the teachers, both listening to them and asking them questions.

47All who heard him were amazed at his understanding and his answers.