Because of the size of the crowd of people around
Jesus, His family passed word along the people to
tell Jesus that they wanted to see Him. They
made sure He knew that His mother was there
hoping that that would make sure He answered
them.

"There came then his brethren and his mother,
and, standing without, sent unto him, calling him.
And the multitude sat about him, and they said
unto him, Behold, thy mother and thy brethren
without seek for thee.
And he answered them, saying, Who is my mother,
or my brethren?
And he looked round about on them which sat
about him, and said, Behold my mother and my
brethren!
For whosoever shall do the will of God, the same
is my brother, and my sister, and mother."
Mark 3:31-35