While he was still speaking to the people, behold, his mother and his brothers stood outside, asking to speak to him.
Christ kept preaching to the crowd though interrupted by His mother and brothers outside, His work was not to be stopped by opposition or distraction. Note how those nearest to Him, with daily private access, were the least mindful to hear Him teach: familiarity breeds neglect of grace.
AI summary
Commenting on Matthew 12:46-50
Verses 46-50. See also . His brethren. There has been some difference of opinion about the persons who were meant here; some supposing that they were children of Mary his mother, others that they were the children of Mary the wife of Cleophas or Alpheus his cousins, and called brethren according to the customs of the Jews.
While he yet talked to the people, behold, his mother and his brethren--(See on Mat 13:55-56). stood without, desiring to speak with him--"and could not come at Him for the press" (Luk 8:19). For what purpose these came, we learn from Mar 3:20-21.