The book "Oriental Religions and Christianity. A Course of Lectures Delivered on the Elves Fellowship to the Students of Union Seminary, New York, 1891" by Frank F. Ellinwood, an American missionary and theologian, is an important work in the study of the relationship between the religions of the East and Christianity . In this book, the author explores the peculiarities and diversity of Eastern religions, paying particular attention to their influence on Christianity. The lectures collected in this book reveal important topics related to the religious ideas, rites and views of the believers of the Eastern peoples. The author compares them with the Christian tradition, emphasizing common aspects as well as differences. Each lecture reveals to the reader another layer of knowledge about belief and knowledge of God in Eastern culture. Frank F. Ellinwood has always been an important figure in American Christianity and missionary work, and his work "Eastern Religions and Christianity" is a valuable addition to selected monuments of spiritual literature. This book will allow the reader to better understand the relationship between Eastern religions and Christianity, expand his horizons in this matter and enrich his own spiritual views.