God’s word is profitable…so says Paul the apostle:
2 Timothy 3:16 All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:
What is the reason that the Bible is profitable? It is because it is “given by inspiration of God.” What does this mean? Peter explains it clearly:
20 Knowing this first, that no prophecy of the scripture is of any private interpretation. 21 For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost. (2 Peter 1:20–21)
Peter says first, that the scripture is not of “any private interpretation.” It is not the work of ancient people who wrote down their own personal experiences with God. The Bible is not a human book like the ancient works of Socrates or Plato.
Instead, God, through his Holy Spirit, directed men like Moses, Isaiah, Matthew, Mark, Luke, John and Paul to write the very words he wanted written.