Luke 2:41-52
2:41 Now every year his parents went to Jerusalem for the festival of the Passover.
2:42 And when he was twelve years old, they went up as usual for the festival.
2:43 When the festival was ended and they started to return, the boy Jesus stayed behind in Jerusalem, but his parents did not know it.
2:44 Assuming that he was in the group of travelers, they went a day's journey. Then they started to look for him among their relatives and friends.
2:45 When they did not find him, they returned to Jerusalem to search for him.
2:46 After three days they found him in the temple, sitting among the teachers, listening to them and asking them questions.
2:47 And all who heard him were amazed at his understanding and his answers.
2:48 When his parents saw him they were astonished; and his mother said to him, "Child, why have you treated us like this? Look, your father and I have been searching for you in great anxiety."
2:49 He said to them, "Why were you searching for me? Did you not know that I must be in my Father's house?
2:50 But they did not understand what he said to them.
2:51 Then he went down with them and came to Nazareth, and was obedient to them. His mother treasured all these things in her heart.
2:52 And Jesus increased in wisdom and in years, and in divine and human favor.