The central theme of 'The Social God' is the belief that God is social, and that both Christian prayer and Christian social action are rooted in the nature of God.

Christian action in the fields of social justice and the political arena is rooted in Christian doctrine. 'The Social God' stresses the essential unity of doctrine and action, of prayer and politics, examining the Christian understanding of God and his relationship with the world. Kenneth Leech emphasizes the centrality of the Incarnation and reveals the other aspects of Christian spirituality, the dangers of a new fascism, and the need for a renewal of Christian theology.