"Word 27. Against Eunomian and about the first or previous theology" is a fundamental work in which the author examines the problems of theology and reveals the essence of faith. The book adheres to a logical structure, arguing its theses and relying on ancient traditions of Christian theology. The elegantly written text arouses the readers' interest in the general topic and awakens the desire to delve into the depths of the understanding of faith and theology. This book will be useful reading both for those seeking to deepen their knowledge of theology and for anyone interested in religion and spirituality."