No not at all, people used to whorship multiple gods and even adopt and intermingle them all without ever so much as having their existance or non-existance cross their minds in any signifigant way in which it was recorded for posterity.

As for who's god or godess is the oldest....smh, lets not even pretend to go there folks, every cultures pantheon has an origins of the world mythology that states their gods were there at the begining.

The world doesnt revolve around your chatholic church, nor is your church as evil as you would like it to be.