Sunday morning in America is the greatest hour of idolatry in the whole week. Why? Because most people who are even worshiping God, are worshiping a God they don't know. They're worshiping a god that looks more like Santa Claus than the God of Scripture. They're worshiping a god that is a figment of their own imagination. They created a god in their own likeness and they worship the god they've made.
This Christianity is not a cultural thing. It is not something that should be just a small part of your life; it is not something that you do on Sunday... Christianity is not about you being just like the world all the time and then coming to church on Sunday. If that is your Christianity... you are not Christian.
When will we realize that one of the greatest mission fields in the West is the pews of our churches every Sunday morning?