The sixty-six books which make up the Bible are considered to have been divinely inspired, by which it is meant that they are infallible and authoritative. Reference to the scriptures is made in settling every religious question. The basic textbook of the church and the basis for all preaching is the Bible.

2 Timothy 3:16 (New International Version):

All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, so that the man of God may be thoroughly equipped for every good work.