In this book, written in Dutch, the author presents us with the results of years of exhaustive research regarding the function of the offer of grace in the preaching of the Reformers, the Dutch Second Reformation, and English Puritanism. Klaas van der Zwaag demonstrates in the first half of the book that, while these men plainly taught the absolute sovereignty of God and the total depravity of men, they did not hesitate to offer Christ freely to every hearer, urging sinners to repent and to believe in this Christ. The second half of the book demonstrates how in Dutch churches, originating in the Secession of 1834, there has been an ongoing departure from this emphasis during the 19th and 20th centuries, resulting in an hyper-calvinistic and hyper-experiential distortion of the biblical gospel. Van der Zwaag concludes his book with an urgent call to the Dutch churches to return to their historical roots so that the biblical gospel might be recovered. This is must reading for those who wish to have a good grasp of the theological complexity of the secession churches in the Netherlands.