Evidence of the book's inspiration includes prophecy, archeology, cohesive unity, accuracy, and Christ revealed.
PROPHECY - See the following and compare them with history: Babylon (Isaiah. 13:19-22), Tyre (Ezekiel 26:3-5), Sidon (Ezekiel 28:21-23), Cyrus (Isaiah. 44:28,45:1), Medo-Persia & Greece (Dan. 8:20,21), and Jesus' Birthplace (Micah 5:2).
ARCHAEOLOGY - Moabite stone discovered in 1868 at Dibon, Jordan, confirming Moabite attacks on Israel as recorded in 2 Kings 1 & 3.
The Lachish letters discovered in 1932-1938, 24 miles north of Beersheba, describing the attack of Nebuchadnezzar on Jerusalem in 586 B.C. History confirms this.
The Dead Sea Scrolls were discovered in 1948. They date back to 150-170 B.C. and contain all or parts of the Old Testament books except the book of Esther. They confirm the Bible's accuracy.
Cyrus' Cylinder records Cyrus' overthrow of Babylon and his subsequent deliverance of the Jewish captives. Again, this is supported by history.
The Rosetta Stone discovered in 1799, in Egypt, by Napoleon's scientists, was written in three languages - hieroglyphics, demotic, and Greek. It unlocked the mystery of understanding hieroglyphics. Understanding hieroglyphics helps to confirm the authenticity of the Bible.
COHESIVE UNITY - Evidence of the Bible's inspiration also includes its cohesive unity. In more than 3000 places the Bible declares itself inspired (2 Peter 1:21). Making such claims of itself implies that the Bible is either inspired by God or a fraud. When one studies the Bible keeping it's context clean and understanding the central theme, there is a cohesive unity throughout the Bible that clears apparent contradictions.
ACCURACY - Certainly it is inconceivable that a book so accurate through the centuries could be considered anything less than inspired by God. No other book has ever been compiled by this many writers over such an expanse of time.
CHRIST REVEALED - the greatest evidence of the Bible's inspiration is evidenced in the Christ it reveals and the changes in those who study it (see John 5:39, Acts 4:12, Matthew 11:26-28).