This volume deals with momentous questions: the doctrine of sanctification, and the baptism with the Holy Spirit. They are matters both crucial to the living of the Christian life and, as Lloyd-Jones was well aware, highly controversial.

The sermons were preached at Westminster Chapel across the long Friday evening series through Romans, and they take the text at the pace that implies. Lloyd-Jones states the alternatives before arguing for his own, which is what makes the volume useful even to readers who end up disagreeing with him.