The Bible starts with the creation. Then God spoke with the fathers of each family, this was known as the Patriarchal age. Then when He chose Abraham and his descendants grew to a nation in bondage, when they were freed, a law needed to be written so that all would know what was expected of them and how they would be judged. When Christ died, the covenant with Abraham was finished and a New Covenant or testament was put into effect with a new written law and the Bible with its history, poetry, wisdom writings, and the new reasons as a new way of a greater sacrifice was written and now, at that point, there is nothing more to be written or to be done.
Sadly I think life before the bible was probably really harsh. The way they were acting was only human though. The bible changed that and made people be nice and taught them values and morals. Now its thousands of years later… we don’t need the book of morals anymore. We basically evolved and learned to ignore our natural human instincts.