I was thinking about this question this morning and I wondered how I would answer it if someone were to ask. After much thought, I came to this conclusion. I believe the Bible is the word of God because I know my Shepherd and I hear His voice and I follow Him. The Bible is God's voice and I know it's His word because I know my Lord and Shepherd. I reject all other writings and so called revelations because they are strangers to me and are not the voice of my Shepherd. I know this answer would not satisfy an unbeliever. What answer would you give to the unsaved? Why do you believe the Bible is God's word?