If a religion stays true to only it's texts written centuries ago, everything would be outdated. There are lots of versions of the texts that translate the wording into new, modern wording and understanding. There is also plenty of ways to adapt the lifestyles into the new age, it just takes trial and error, which is what most religions have gone through throughout the years.
I speak from the position of a Gospel/Bible adherent only but these views are transferable to most religions. I don't say all because I have studied a limited number of other religous texts (Islam, Budhism, Jewdaism). These religions teach the necessaty of mental growth and stress the advancement of knowledge. It has only been for political reasons that any of these religions have hindered, blocked and otherwise tormented the advance of science. Nothing about the study of the creator is anti-science as the creator is the embodiment of truth- or the truth is an embodiment of the creator.
Religions and their hierarchies must adapt to modern life, otherwise they will falter just like normal life forms do when they can't adapt to certain situations in their environment. Sacred texts are good for a basis for religious tenets. However, every religion must adapt to modern humanity or it will starve itself out of existence.
I believe that many of the worlds most ancient and sacred Religions need to find some middle ground with the contemporary modern world. Some beliefs that these old religions hold are simply not sympatico with the way the world works anymore and some of them are outright dangerous to the people.
Major religions of the world can be adaptable to contemporary life. The current Pope, head of the Catholic Church, has been making radical decisions which are aligned with contemporary customs and beliefs, but also align to Catholicism's basic and sacred beliefs. Major religions can adapt to serving others while still maintaining and practicing their fundamental beliefs.