In this book I approach the development of the main doctrine of Trinitarianism. It is important to remind as I do so that that doctrine must be studied by both the criteria of Christian theology and history, and that as I study the development of doctrine, we need to establish a connection between what is confessed, or dogmas, and what is believed and taught, and go back diachronically from what is confessed to what was taught and to what was believed.
