If Jesus had brothers and sisters, why did He entrust the care of His mother to the Apostle John?
Easy, maybe becuase his sisters and brothers didn't believe in him.
I came from a family who didn't know the Lord....in my will while they were youngsters, if anything were to happen to me I did not leave the care of my children to family members, I appointed a Christian family to raise the.
So I have no problem with Jesus 's words to Mary and John....that they be family to one another.....because the family blood line we now have is in Christ....thus the "family of God"