31 Just then his mother and brothers showed up. Standing outside, they relayed a message that they wanted a word with him. 32 He was surrounded by the crowd when he was given the message, "Your mother and brothers and sisters are outside looking for you." 33 Jesus responded, "Who do you think are my mother and brothers?" 34 Looking around, taking in everyone seated around him, he said, "Right here, right in front of you - my mother and my brothers. 35 Obedience is thicker than blood. The person who obeys God's will is my brother and sister and mother."
Matthew Henry's Commentary on Mark 3:31-35
Commentary on Mark 3:31-35
(Read Mark 3:31-35)
It is a great comfort to all true Christians, that they are dearer to Christ than mother, brother, or sister as such, merely as relations in the flesh would have been, even had they been holy. Blessed be God, this great and gracious privilege is ours even now; for though Christ's bodily presence cannot be enjoyed by us, his spiritual presence is not denied us.