I don’t know of a finer book on the Holy Spirit. Many of us know Sinclair Ferguson for his excellent sermons, but many do not know the Sinclair who writes deep and serious theology. A good pastor should be capable of doing both, where his work is done behind the scenes, and what you get is a distillation of his labors and work. Ferguson gives us a glimpse behind the curtain and lets us see the capable and wonderful theologian who rests behind the memorable and Christ-exalting sermons.