This document provides an in-depth analysis of the causes of sincerity and disputes among religious groups. It discusses six main causes: 1) Lack of clearly defined roles and rewards leads to competition among religious groups. 2) Disputes arise from a sense of dignity among the religious, while agreement comes from abasement among the misguided. 3) Desire for heavenly rewards can lead to egoism and rivalry. 4) Failure to maintain sincerity despite foreseeing consequences. 5) Strong religious groups do not feel the need for unity like weak groups. 6) Lack of embracing unity as a source of strength. The document calls for sincerity, humility, preference of others, and unity among the religious to remedy