This is a study of Spinoza's philosophy seen through his views about the existence, nature and role of God. The titles of Parts i and n derive from the memorial written by Pascal in 1654: Dieu d'Abraham, Dieu d'Isaac, Dieu de Jacob, non des Philosophes et des Savants. Part 1 looks at the God of the Philosophers: at God's existence and nature — at how God relates to us and to the rest of the world in terms of causality — at how a knowledge of God is supposed to fit in with other sorts of knowledge. Part 11 looks at what Spinoza tells us about religion - its origins, history and practice. Part in considers his own positive approach to God and religion: his views on religious freedom, his understanding of eternity and his puzzling use of the figure of Christ. The book ends with an assessment of Spinoza on God and religion.