"If we define theology as a systematized knowledge of God, from whom everything originates, to whom everything stands and to whom everything is directed, then it is necessary to begin precisely with the teaching of God. Not only should we not be surprised that dogmatics begins with the study of God, but, on the contrary, we should expect that all sections of systematic theology will be devoted to the study of God in one way or another. After all, theology as a whole is conceived as the teaching of God, only in its first part God is the direct object of study, and in others He is studied indirectly." Louis Berkhof, from the chapter "The Existence of God"

"This book is a storehouse of information and theological thought; moreover, it is probably the best one-volume theology textbook among all theological traditions. I myself rely heavily on Berkhof's research on the immutability of God and the personality of the Holy Spirit." Wayne Grudem

"Berkhof can become our friend and mentor. He helped many of his contemporaries not to fall into heresy, igniting people's hearts and tearing them out of the routine of Christian life." Jeff Thomas

"The Systematic Theology of Berkhof has been a classic textbook in many Reformed seminaries for many years." Robert Raymond

"This book is still the best introduction to Reformed theology ever written in English." Richard Muller