Speaking broadly, there are two great, competing temptations that tug at the Christian Church. Both of them are based on the fear of man.
The first is the one that the theologically orthodox discuss and battle the most: the temptation to forsake Christian doctrine to seek the approval of a hostile culture. This is the old argument that the world would embrace the Church if only the Church were more like the world. It is embraced by much of Mainline Protestantism, and it’s the path to religious extinction. In the effort to appeal to the world, the Church becomes the world, and the logic for its distinct existence disappears. Thus the rapid decline of denomination after denomination that has decided to essentially merge with America’s secular culture.
The second temptation is one that attracts the theologically orthodox: the temptation to run toward a form of hyper-legalism as a firewall to protect your family from the sins of the world. Mothers and fathers are desperate for a way to guarantee that their children will grow up to love the Lord. They want to build high walls against sin, so they seek to create distinct communities that are free of the world’s filth and moral compromise.