What is the Trinity? Why does it matter? How should it affect us? The Trinity is a current 'hot potato' in the Christian Church. Recently some best-selling authors in America have had their books withdrawn from the market when their beliefs in this area have come under scrutiny. If your understanding of God is wrong, it follows that your other ideas may be wrong too. Donald Macleod shows us why that is the case in this best-selling book. 'The doctrine of the Trinity is not simply something to be believed, but something that ought to affect our lives profoundly' says Donald Macleod in this useful book that teaches us about the concept and implications of the doctrine of the Trinity.