Why haven't we revised the Bible in centuries? Possible Duplicate:
  What are the biblical arguments that the Bible canon is closed?  




Preface: This question is not directed at a specific denomination.

Why haven't we revised the Bible in centuries?


Christians believe that God inspired humans to write the Bible.
But the fact is that humans have decided which writings should be included in the Bible and which should not.
So as society and civilization proceed, why haven't we shed some passages which aren't relevant anymore and why haven't we included some new writings which are particularly relevant to modern day Christianity?
For instance, I think many writings from St. Augustine and St. John Bosco should be included in the Bible.
Several reasons:


Historically, canonicity in the NT was restricted to the 12 apostles and direct relations of Jesus. (Mark = Peter, Luke=Paul*, Matthew &amp; John were both disciples, Hebrews was errantly ascribed to Paul, James and Jude were brothers of Jesus // Paul was considered to be an apostle, since Jesus appeared directly to him.)
Later Councils (I forget if it was Chalcedon or Ephesus) also declared the canons closed, representing the consensus of the church that indeed, "It is finished"
Theologically, it is understood that Jesus was the last and ultimate sacrifice, and therefore no further revelation of God is necessary (something that would be at direct odds, with say, the Ba'hai)