Treasury of Scripture Knowledge
For even Jesus' [half-] brothers did not believe in Him [i.e., at that time].
While Jesus was still speaking to the large crowds, His mother and [half-] brothers were standing outside [of the large house. See 13:1] wanting to speak to Him.
Then Jesus' mother and [half-] brothers came and stood outside [i.e., of a large house. See Matt. 12:46-13:1]. They sent a message to Him, asking Him to come out to them.
Then Jesus' mother and [half-] brothers came to Him, but they could not get near Him because of the [large] crowd.
But Peter [responded by] standing up with the eleven [other] apostles and, lifting up his voice, began to speak. He said, "People of Judea and all who live in Jerusalem, listen to what I am saying so you will understand this situation.
So, they sent their disciples, [along] with the Herodians to Him [Note: These were members of a political party favoring King Herod], saying, "Teacher, we know that you are sincere, and that you teach the truth about God's way. You do not care for [i.e., do not fear or give in to] anyone or allow the position of any person to influence you.