40 men wrote it over a span of 1600 years or so. But all 66 books are harmonious and contain a consistent theme. How could this be possible by humans alone?
Moses did not write the Pentateuch. Why would he speak of himself in the third person and call himself the "meekest" man. How many writers does that leave? By "harmonious and consistent theme" do you mean that later writers borrowed ideas from earlier writers and imposed new meanings on them? Where are the "copyright dates" on individual books of the Bible that give you a span of 1600 years? If any of your answers are based on traditions of men and apologetics of believers, why should I believe them? Why should you?
It accurately fortold events. (i.e. naming who and how Babylon woud fall).
Men wrote stories after the fact and called them prophesies because they knew that people were ignorant and gullible. Not much has changed in the 21st Century, except for the fact that we now have the internet, public libraries, and innumerable pages of real Biblical Scholarship for anyone who cares to educate themselves.
The notion that if everyone followed the morals of the bible the world would be a better place.
I spent tme in Japan and found the non-Christian people of that fine country to be honorable human beings.
Scientific accuracy in a time when people did not know about these things (progressive order of earth's preparation for human habitation, saying the earth was round and hung on nothing, water moves in a cycle, universe is governed by laws, what it touches on regarding heath and sanitation is accurate (quarantine, waste disposal, not having a calm mentality bad for the health)
How is this for scientific accuracy:
Honesty of its writers.
Snakes and donkeys can talk. Men can live over 900 years. A flood covered the entire Earth but didn't affect snow and ice in Antarctica or Greenland. Seventy descendants of Abraham entered Egypt and in four generations became a population in the millions. In one Gospel Jesus went to Egypt as a child, yet in another he did not. Etc.