The book “The Teaching of St. Athanasius of Alexandria about the Holy Trinity” by Kirill Lopatin is a deep and fascinating study of one of the most significant saints and theologians of early Christianity. Athanasius of Alexandria, who lived in the fourth century, became a key figure in the formation of the Christian doctrine of the Holy Trinity, and his works still remain relevant for theologians, historians and anyone interested in the foundations of the Christian faith. In his book, Lopatin not only retells the ideas of Athanasius, but also immerses the reader in the context of his time, showing how political and cultural circumstances influenced the development of Christian thought. The author skillfully combines historical facts with theological reflections, which makes the text not only informative, but also exciting. The reader will be able to see how Athanasius opposed Arianism and defended the dogma of the unity and difference of the persons of the Holy Trinity, which became the basis for the further development of Christian teaching. This book will be of particular interest to those who seek a deeper understanding of Christian theology, as well as those who study the history of the church and the philosophy of religion. Students of theological faculties, teachers, as well as all those who are interested in spiritual issues, will find in it a lot of useful and inspiring. Lopatin appeals to the reader with respect and understanding, which makes it easy to perceive complex concepts and ideas. The topics raised in the book cover not only theological aspects, but also philosophical ones, which makes it important for a wide audience. Lopatin explores the nature of God, issues of personal faith and collective worship, and the role of the Holy Trinity in the lives of Christians. These topics are still relevant today, when many are looking for answers to questions about spirituality and the meaning of life. The style of Kirill Lopatin is clear and accessible, which allows him to convey complex ideas to a wide audience. He skillfully uses a rich language, which gives the text literary value. Lopatin is also known for his other works in which he explores various aspects of Christian thought, such as Theology and Philosophy and The History of Christian Thought. His ability to connect ancient texts with contemporary issues makes his work particularly valuable to readers seeking a deep understanding of faith. The book “The Teaching of St. Athanasius of Alexandria about the Holy Trinity” is not just a scientific study, but a real find for anyone who wants to deepen their knowledge about Christianity and its foundations. It invites the reader to reflect on the faith, spirituality and significance of the Trinity in the life of each person. If you are looking for a work that will help you better understand Christian theology and its historical roots, then this edition will become a real treasure for you. Do not miss the opportunity to discover a world full of deep reflection and inspiration, which offers Lopatin in his book. This work will be an excellent addition to the library of anyone interested in spiritual issues, church history and philosophy.