This is going to be a stupid question but pleas bear with me.

There are many different books that make up the bible and from what I can tell they all relate to God is some way. From what I understand it begins with creation and then ends with a prophecy but everything in between are many different stories. Stories about sin, punishment, forgiveness, how to act, kings, families, ect. What I don't understand is why there were no new stories. Did God stop speaking to people or stopped sending messengers? Are there no more prophets? SO much time had past and the world has changed but nothing had been added.