Why did the tradition eventually arise that these books were written by apostles and companions of the apostles? In part it was in order to assure readers that they were written by eyewitnesses and companions of eyewitnesses.An eyewitness could be trusted to relate the truth of what actually happened in Jesus' life.
According to both Jewish and Christian Dogma, the books of Genesis, Exodus, Leviticus, Numbers, and Deuteronomy (the first five books of the Bible and the entirety of the Torah) were all written by Moses in about 1,300 B.C. There are a few issues with this, however, such as the lack of evidence that Moses ever existed .
