Systematic Theology

I have a friend who questioned me about systematic theology. She couldn't understand why it was necessary. I see it a little more clearly today. We were looking into the doctrinal position about hell from a church in a nearby city. They teach that everyone will end up in heaven eventually but it may take many years in hell before they repent. The implications of that position is enormous when it comes to other theological positions. Ultimately it ends up with a humanistic approach to doctrine rather than a God-centered approach. That is why we need systematic theology so that we understand how one belief effects another. Of course we live in a post-modern age when our beliefs do not have to be consistent.