How many books of the Bible are inspired by God and without error?
The Bible claims inerrancy ("inerrancy" means without error) for the entire
Bible, and the stern warning at the very end of the Bible (copied below) not to add or delete anything from the Bible
serves not only as God's declaration of Bible inerrancy but also precludes any other writing from parading as 'another'
Bible or an 'extension' of it:
"For I testify to everyone who hears the words of
the prophecy of this book: If anyone adds to these things, God will add
to him the plagues that are written in this book; and if anyone takes
away from the words of the book of this prophecy, God shall take away
his part from the Book of Life, from the holy city, and from the things
which are written in this book." (Revelation 22:18-19).
Paul also wrote to Timothy, "All Scripture is given by inspiration of God, and is
profitable for doctrine, for reproof, for correction, for instruction in
righteousness." (2 Timothy 3:16)