The parents of Jesus went every year to Jerusalem at the feast of the
Passover. When Jesus was twelve years old, they took Him with them. When
they went home, He tarried behind in Jerusalem, and they knew it not,
but supposing Him to be in the company, they went a day’s journey. And
they sought for Him among their kinsfolk and acquaintances. And when
they found Him not, they returned to Jerusalem, seeking for Him. After
three days they found Him in the temple, sitting in the midst of the
teachers, both hearing them and asking them questions. And all that
heard Him were amazed at His understanding and His answers. And Mary
said: Son, why hast Thou thus dealt with us? Thy father and I sought
Thee sorrowing. Jesus answered: How is it that ye sought me? Knew ye not
that I must be in my Father’s house? And He went down with them to
Nazareth; and He was obedient to them.--And Jesus advanced in wisdom and
stature, and in favor with God and men (Luke 2:41-52.)