Book excerpt: This book contains a systematic description of the theologies of Colin E. Gunton (1941‐2003) and Oswald Bayer (b. 1939). Their use of the doctrine of creation in systematic theology has remarkable consequences for late-modern theological ethics. This book explores those consequences from the example of the theological doctrine of marriage. The author also contributes to the ecumenical debate by building on the Neo-Calvinist theological heritage.