Memorial: St Timothy and St Titus, Bishops
From: Mark 3:31-35
The True Kinsmen of Jesus
 And His (Jesus') mother and His brethren came; and standing outside they went to Him and called Him.  And a crowd was sitting about Him: and they said to Him, "Your mother and Your brethren are outside, asking for You."  And He replied, "Who are My mother and My brethren?"  And looking around on those who sat about Him, He said, "Here are My mother and My brethren!  Whoever does the will of God is My brother, and sister, and mother."
31-35. In Aramaic, the language used by the Jews, the word "brethren" is a broad term indicating kinship: nephews, first cousins, and relatives in general are called `brethren' (for further explanation cf. note on Mark 6:1-3). "Jesus did not say this to disown His mother, but to show that she is worthy of honor not only account of having given birth to Jesus, but also because she has all the virtues" (Theophylact, "Enarratio In Evangelium Marci, in loc.").
Therefore, the Church reminds us that the Blessed Virgin "in the course of her Son's preaching received the words whereby, in extolling a kingdom beyond the concerns and ties of flesh and blood, He declared blessed those who heard and kept the word of God as she was faithfully doing" (Vatican II, "Lumen Gentium", 58).
Our Lord, then, is also telling us that if we follow Him we will share His life more intimately than if we were a member of His family. St. Thomas explains this by saying that Christ "had an eternal generation and a generation in time, and gave preference to the former. Those who do the will of the Father reach Him by Heavenly generation [...]. Everyone who does the will of the Father, that is to say, who obeys Him, is a brother or sister of Christ, because he is like Him who fulfilled the will of His Father. But he who not only obeys but converts others, begets Christ in them, and thus becomes like the Mother of Christ" ("Commentary on St. Matthew", 12, 49-50.)
Source: "The Navarre Bible: Text and Commentaries". Biblical text taken from the Revised Standard Version and New Vulgate. Commentaries made by members of the Faculty of Theology of the University of Navarre, Spain. Published by Four Courts Press, Kill Lane, Blackrock, Co. Dublin, Ireland. Reprinted with permission from Four Courts Press and Scepter Publishers, the U.S. publisher.