“All Scripture is inspired by God and is profitable for teaching, for rebuking, for correcting, for training in righteousness, so that the man of God may be complete, equipped for every good work.”
(2 Timothy 3:16–17, HCSB)

A ghostwriter is someone who writes something that is officially credited to another person. The Bible has a ghostwriter. All Scripture is inspired (literally God-breathed). The various books of the Bible had different authors, including Moses, Daniel, David, Matthew, Mark, Luke, John, Paul, and James. The ghostwriter in their cases was the Holy Ghost, or the Holy Spirit. While various men and women used a pen to write the words of the Bible, the author of these words is God.