This book examines the thinking of several Reformed theologians on theological issues that are, historically or by content, related to philosophy. Three Dutch authors from successive generations are considered in particular: Gisbertus Voetius (1589-1676), Petrus van Mastricht (1630-1706), and Anthonius Driessen (1684-1748). A diversity of issues in Christian doctrine is discussed. These include the relationship between theology and philosophy, creation, Divine providence, the human being, and Divine and natural law. By reconstructing the views of these three theologians, this book highlights similarities and differences within Reformed orthodoxy, both in doctrine and in relation to philosophy. The changes that thus become visible also suggest that biblical Christianity outlives the philosophical apparatus by whose assistence it is explained.