The era of western Christians' blissful ignorance about Islam is behind us. Today, the world's second-largest religion is leaving an indelible mark on our culture, and terms like jihad, imam, Quran, and fatwa have become an integral part of our everyday language. While Muslims, like Christians, are a diverse group, they share certain fundamental beliefs, including the conviction that there is only one true God. But is this God identical to the one worshipped by Christians? How does the deity of Muhammad differ from the God of Christianity? This book offers a clear, impassioned, and balanced exploration of the distinctives of Christianity and Islam, written from a biblically grounded perspective. The author, a renowned historian and theologian with years of experience studying Islam, aims to equip Christians with a deeper understanding of how to engage with Muslims in a spirit of mutual respect. The book begins with an overview of Islam's history and core beliefs, followed by insightful discussions on the Five Pillars of Islam, the complex history of religious violence, the doctrine of the Trinity, and the character of God. It also delves into Christian and Muslim perspectives on Jesus Christ and salvation, highlighting valuable lessons Christians can learn from Muslims and offering practical guidance on sharing the Gospel with Muslim neighbors.