The history of religions offers vivid examples where certain approaches to spreading faith provided outstanding competitive advantages. The success of these approaches is based not only on aggressive expansion but also on a carefully built organizational system capable of mobilizing the masses and clearly conveying the values of the teaching. Islam, having originated in Arabia, quickly conquered territories thanks to its clear and accessible ideology, captivating people with the simplicity and definiteness of its doctrines. Similar methods were employed by Catholicism, whose strength is enhanced by a strict hierarchical system that can rapidly respond to the challenges of the times and consolidate efforts to spread its doctrine. At the same time, the Orthodox tradition, founded on deep theological thought and a heritage of internal spiritual quest, demonstrates a more tolerant and less aggressive attitude toward other beliefs. Although this approach preserves the richness of historical continuity, it is often seen as less proactive when it comes to active proselytizing. In conclusion, one can confidently say that the energy of cultural expansion, a centralized organizational structure, and the accessibility of the teaching have made Islam and Catholicism more competitive in certain aspects than their Orthodox counterparts, serving as a vivid example of how historical and structural features can shape the strength of religious systems in a dynamic world.