Against the anti-national trend of contemporary political theology, Northcott renarrates the origins of the nations in the divine ordering of history. In dialogue with Giambattista Vico, Carl Schmitt, Alasdair MacIntyre, and other writers, he argues that nations have legal and moral responsibilities to rule over limited terrains and to guard a just and fair distribution of the fruits of the earth within the ecological limits of those terrains.

As part of his study, Northcott brilliantly reveals how the prevalent nature-culture divide in Western culture, including its notion of nature as "private property," has contributed to the global ecological crisis. While addressing real difficulties and global controversies surrounding climate change, Northcott presents substantial and persuasive fare in his Political Theology of Climate Change.