Excellent. Great translation with a helpful (lengthy) introductory essay and equally helpful (although shorter) footnotes and translation notes. This book provides some clear explanations, distinctions, and arguments related to the concepts of the Holy Spirit's work in calling and regeneration and the connection between the Spirit's work and the Means of Grace (particularly the Word, but also the sacraments of baptism and the Lord's Supper) in calling and regeneration.
Really interesting discussion, arguments, and surveys of historical Reformed writers' perspectives on topics such as the nature of calling and election, immediate versus mediated regeneration, preparatory grace, grace as moral influence only, the role/use/benefit of the Word in calling and regeneration, the role/purpose of baptism (for infants as well as adult converts), "holy children" from families of only one believing parent, the role of preaching the Word, different types of preaching (missionary and congregational) and methods of preaching (focusing on a balance between catholicity and holiness with an emphasis on covenant and faith and repentance), language/human words and their relationship to the human spirit and being, faith, signs, seals, covenant, Pelagianism, semi-Pelagianism, and more. Bavinck may have written this to combat Remonstrant and Anabaptist errors, but it was certainly helpful to me in clarifying what I see as some errors in my spiritual background and providing me with a more Biblical basis for my beliefs.
Pretty sure I put this book on my reading list from a footnote in a Cornelis Venema essay on the topic of covenant children who die in infancy, and while I don't exactly remember why it was I wanted to read it, this was well worth the time and effort it took to read. As a side note, this has to be one of the hardest books I've ever read, so may the aspiring reader undertake it with great determination and a pencil in hand!