Modern humans have been on Earth anywhere from 100,000 to 250,000 years. All of the people who ever lived on this Earth prior to the birth, life, and death of Jesus of Nazareth never heard of Jesus nor read the Christian Holy Bible.
There are people alive today who have never heard of the Christian Bible, the Christian Gods or the many religions that have come from this faith base. Their ancestors never did, and neither will their future generations.
This is a tribe of indigenous people living in the Amazon rain forest discovered in 2008. What God(s) do you think they believe in?