Luke 2:46-50 New Revised Standard Version (NRSV)
46 After three days they found him in the temple, sitting among the teachers, listening to them and asking them questions. 47 And all who heard him were amazed at his understanding and his answers. 48 When his parents[a] 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.” 49 He said to them, “Why were you searching for me? Did you not know that I must be in my Father’s house?”[b] 50 But they did not understand what he said to them.