One of the things we are taught in Christian culture or at least the evangelical/protestant version of it, is that in every area of life we should ask what does the bible say about it? In other words if I have a question in a certain context, I can look to the bible to find the answer to that question. This is because not only is the bible inspired, inerrant, and authoritative, it is also sufficient.
This is supposed to work on all moral issues obviously, but the idea here is that it also works for everything else. The bible is the “road map” that we are to follow. It is God’s instruction to us. In it is everything we need. Some will go so far to say that not only is a way to hear God’s voice, but it is the only way.
Now this works pretty well on a lot of moral issues. It can even work when you think about how we as people are supposed to treat each other. However, we can sort of start to run into some problems in certain contexts of life.