Your thinking on this question may come from those historical traditions in the Buddhist sutra depository. There is no sutra depository in ordinary churches. They only use bookstores (which sell bibles, church books and gifts) or libraries (which are open). To protect those treasures, in addition to safety measures, we should try not to open them to the outside world. Modern churches should disappear. In the Middle Ages, some Catholic churches or monasteries should have some places like sutra depository. The collection is some ancient manuscripts or biblical manuscripts.