Books can be attributed to "Anonymous" for several reasons:
* They are officially published under that name * They are traditional stories not attributed to a specific author * They are religious texts not generally attributed to a specific author
Books whose authorship is merely uncertain should be attributed to Unknown.
Before the apostles were empowered by the Holy Spirit, they were very different in everything they did and see. After that they were totally changed. They had been with Jesus, ate with Jesus, ministered with Jesus. The Holy Spirit indwells in each of us as we submit to His will.