My authority is based on the incredible truth that the scripture says who I am in this universe alive and breathing. Let us see foremost the reasoning of my identity and my authority based on the written Word- the ‘Rema ‘. 

The writers had different purposes for writing. Isaiah wrote to warn Israel of God’s coming judgement on their sin; Matthew wrote to prove to the Jews that Jesus is the Messiah. Zechariah wrote to encourage a disheartened Israel who had returned from Babylonian exile and Paul wrote addressing problems in different Asian and European churches.

 The unity of the Bible is just one more amazing proof of the divine inspiration and authority of the Bible-

1. The Bible was written over a span of fifteen hundred years. 
2. It was written by more than forty men from every walk of life. For example, Moses was educated in Egypt, Peter was a fisherman, Solomon was a king, Luke was a doctor, Amos was a shepherd, and Matthew was a tax collector. All the writers were of vastly different occupations and backgrounds.
3. It was written in many different places. The Bible was written in three different continents: Asia, Africa, and Europe. Moses wrote in the desert of Sinai, Paul in Rome, Daniel wrote in exile in Babylon and Ezra wrote in the ruined city of Jerusalem.
4. It was written under many different circumstances. David wrote it during a time of war. Jeremiah wrote at the sorrowful time of Israel’s downfall,  Peter wrote while Israel was under Roman domination and Joshua wrote while invading the land of Canaan.

It is true that one author guided these writers through the whole process that is the Holy Spirit.  II Peter 1:21 states, “No prophecy was ever made by an act of human will, but men moved by the Holy Spirit, spoke from God.”