Let’s study the oldest history book in the world today. It took 1,500 years to write the Bible with 400 years of silence between the Old and New Testament. There are 66 books in the Bible.
Each author of the books only wrote down what the Holy Spirit had them write. All scripture is God-breathed. 2 Timothy 3:16
This means that the Bible was not written by the will of man. God used his hand-picked his authors through the Holy Spirit to write down his message in the Bible, and God did so in his own timing for man.
The earliest books written in the Bible is either Genesis or Job around 3,400 years ago. Did you know Moses is believed to have written the book of Genesis and maybe Job?