"Christianity and Islam" by Karl Heinrich Becker is a study of the main religious doctrines and teachings of the two largest monotheistic religions of the world. The author examines the historical context of the emergence and spread of these religions, as well as their impact on society, culture, and interreligious relations. This book helps the reader to better understand the similar and different features of Christianity and Islam, as well as to spread his knowledge about religious tolerance and mutual respect.