Back hundreds of years ago, people actually blamed illness on bad spirits and even believed in bleeding people to cure illnesses. People would also use leaches on people to get the blood out. Doctors on the battlefield did not do something as common as washing their hands between patients, to avoid spreading infection and disease. Would you want the knowledge these medical professionals of the past, to be what your doctored followed today when treating you or do you appreciate the fact that they have increased their knowledge and thus their skill with time?
Isn't it odd though, that we place that understanding on medicine and yet turn a blind eye to religion. We look at the people who practiced our religion in the past, as smarter then us or maybe even closer to god. We take the information they wrote down and see it as inspired or the complete law of god. We don't even question the doctrines and often defend them with references from other doctrines of the time, with a unbreakable faith. Why?
These men who wrote these pages, were less educated then modern man, and know very little about the world of science and nature. Even the belief in bleeding people who were sick to get the evil spirits out, was connected to ancient religious teachings. We have come a long way as a society in the world of science, education and our understanding of this world. Yet in religion, we are willing to accept the new science and yet defend all things religious that we laid down centuries ago. Is that just faith, and if so, what if that same faith had remained in all parts of life? Would you be bleed today to cure your flu?
Society and knowledge grow and accept that in the past we knew less, and grew beyond that to advance as a culture. Sometimes we learn that things done only months ago, are not correct or effective. Yet we are more willing then not to continue learning and ever expanding our knowledge. Unless of course it is with religion, with that we remain firming planted in beliefs from 2000 years ago, and for some reason .... we find that acceptable. Why?