This volume addresses an important problem in social scientific research on global religions and spirituality: How to evaluate the role of diverse religious and spiritual (R/S) beliefs and practices within the rapid evolution of spiritual globalization and diversification trends. The book examines this question by bringing together a panel of international scholars including psychologists, sociologists, and researchers in religious studies, public health, medicine, and social work. The content includes chapters describing innovative concepts of post-Christian spirituality, Eastern forms of meditation, afterlife beliefs associated with the three dominant cultural legacies, various non-religious worldviews, spiritual Jihad, and secular and religious reverence. The book also covers such important themes as spiritual well-being, faith, struggle, meaning making, modeling, and support, as well as mysticism and using prayer to cope with existential crises. This book advances the understanding of the role of R/S across different faiths and cultural systems, including both Western and non-Western ones, and enriches the mainstream of psychological sciences and practices. It appeals to students, educators, researchers, and clinicians in multiple related fields and disciplines.