In the early years of Christianity there was dispute over which books should be canon and which were heresy. The 4 versions of the Gospel were widely accepted as the only 4 true Gospels, by St Irenaeus of Lyons in what year?

What we today call the Bible, is not one book, but a collection of many shorter books, written by different authors over centuries and brought together in one volume.

The Old Testament is a collection of ancient Jewish holy scripture and the New Testament is just a small part of the early Christian writings. But who chose which books would make it into the Bible and which would be cast aside?