Jesus is my brother

Matthew 12:46-50

The key words in this passage are: mother, brother, sister. It's all family language. The glaring ommission is "father" which makes sense since Jesus has only one Father. The use of mother is interesting because in our culture and time it would indicate that it's possible for some people to have some sort of authourity over Jesus. However, the culture and time in which Jesus lived was very male dominated and the eldest son would have had authourity over the whole household, including his mother, especially after Joseph (the other male authourity figure) was dead. So, it is possible to be Jesus' mother without having any authourity over him.
The subject of this passage is: Who is Jesus' mother, brother and sister? The complement is: Whoever does the will of my Father in heaven. Whoever submits themselves to the will of God, acknowledging God as their Father - the ultimate authourity figure - is part of God's family, just as Jesus is.
I titled this passage by saying that Jesus is my brother which begs the obvious question: am I really? Am I sold out to the will of the Father?