OMG I can't believe some of the circular logic being used here by biblical defenders..
"Someone had to betray Jesus in order that the Old Testament might be fulfilled." - MacBeth25
"The canon is the canon. God's word does not change and man plays a dangerous game by attempting to add to it or take from it." - OliverTwisted.
Circular logic is endemic in biblical literalism....
"The bible is the inspired word of God."
"How do you know?"
"It says so in the bible."
Oh and OliverTwisted I can give you one very clear example of how God's word does change in the accepted Cannon. Mosaic Law says "an eye for an eye a tooth for a tooth" (Leviticus 24:19–21, Exodus 21:22–25, and Deuteronomy 19:21) . Jesus proceeded to supersede that with "turn the other cheek" (Matthew 5:38–39).
According to believers, Mosaic Law was God's law, Jesus was God incarnate. God therefore changed his mind.