The Scientific believe only in what science says currently, so in the 1500s the scientific would be saying that the Sun revolves around the Earth until new evidence was gathered, or in the 1950s they would be saying an electron is the smallest particle, etc...their beliefs are ever-changing as the evidence changes.....
The religious believe only in what religious scripture says, so in the 1500s they would believe whatever religious scripture says, and in modern times still they would believe in what religous scripture says, and 1000 years from now they would also still believe in what the scripture says......