Imperialism, Christianism, nationalism, and economism define four epochs of Western European civilization. From a Christian perspective they are all idolatrous. The idolatry that called for emperor worship was the most blatant. Making Christianity itself an idol was theologically the most distressing. Nationalism was the most violent in its destructiveness. Economism is the most violent existentially. It removes all meaning from life, and it is the most destructive of the natural world which is reduced to nothing more than its usefulness in production and consumption.
Against this background the anticipatory hints of Earthism are a great relief. Strictly speaking, it is also idolatrous, but it is an idolatry that for now is not harmful...For Christians, Earthism should be readily visible as a great improvement. The Bible begins with the affirmation that God is the Creator of the Earth. God saw that it is good. The human role is to tend it. One of the most popular biblical verses states the God so loved the world that he gave us Jesus Christ.
Of course, the explicit teaching is that we should love and serve God. But, again and again, the Bible makes clear that the expression of our love of God is primarily through our service of God’s creatures. The creatures we can serve constitute the Earth."
-- John B. Cobb, Jr.