There are no hidden pages in the bible and all the interpretation were mere literal in nature .
This is an age old question thrown by the PROTESTANTS to the ROMAN CATHOLICS .
To basically answer the question , one should analize first the question both biblically and in commonsense to reconcile both the people who relies on the bible and those who thinks logically .
Try to compare MT. 27:56 and MK 15:40 , it is said thee that the Virgin Mary had a sister named like herself who was the wife of CLopas or Alpheus( variety of the same name ) and who had two sons , James the Less and Joses as claimed as the brothers of Jesus .
Another instance also for commonsense reasoning , when Jesus was 12 years old and was lost in the temple , as claimed or interpreted that he has 4 brothers and 2 sisters , bringing the acocunt to space them evenly in their respective ages . James must be 10 , Joses must be 8 , Judah must be 6 , and Simon must be 4 . Considering on that gaps , the sisters must be 2 and the other must still be unborn . The Virgin Mary went on to trek 70 kilometers in 3 days one way . Is it possible ? NO .
So prior to coming up with questions like these , one should consider also to answer the difficulty of what is realistic . dili lang ang unsay atong interpretation because we cant reconcile or for the sake of discussion lang . So now you guys see a part of the answer that is biblical and what makes sense .
Other than that , this is the belief of the ROMAN CATHOLICS today . That is because the RC's of the yesteryears knew better and these are all inheretance of belief's as what they knew as they were really there . The basic error of non believers to this doctrine is the fact tht they dont have no other source of information except the bible . Mind you , all these interpretations carry different meanings abhoring what carries an advantage to their leverage without any valid foundation .
Great example of these are the conclusions of a one great family of 4 brothers and 2 sisters must be recollected that ADELPHOI which is translated " brethren " may also signify " cousins " .
So
RAISSAH ... here you go .