How does Protestant Church explain Luke 2:48? At Luke 2:48 we read of St. Mary's complaint to Jesus for `getting lost'at the Temple:


  His mother said to him, “Son, why have you treated us like this? Your father and I have been anxiously searching for you.”


Some denominations believe that Jesus had siblings on the earth.  I am therefore, curious to know why Mary did not mention the said brothers and sisters who would have definitely joined the parents in the search for their dear brother Jesus, who  was 12 years of age at that time . How does the Protestant  Church explain the said omission ?
If we accept the bible teaching that Mary/Joseph had children, then they would have been younger than Jesus.  In the question, the age of Jesus was 12.  The oldest sibling was probably no older than 10 at that time.


  Is not this the carpenter, the son of Mary, the brother of James, and Joses, and of Juda, and Simon? and are not his sisters here with us? And they were offended at him. Mark 6:3


So there is no sense in saying, your father and me and your younger brothers or sisters are searching for you.  In other words, if you've "lost" one child, you're not going to send out an even younger child to do your searching for you.  Most likely when Mary/Joseph went back to Jerusalem after a few days to look, they would have left their other children with trusted relatives or neighbors.


  But they, supposing him to have been in the company, went a day's journey; and they sought him among their kinsfolk and acquaintance.  Luke 2:48


They wouldn't bring their other children on the journey back to Jerusalem from Nazareth.