It could be about an individual, a group, a scripture, a specific devotion, an event, a phenomena, but should not be of a general nature such as “The History of Islam” or “The Story of Buddhism”. Also try to refrain from writing about well-known topics very common to your own faith such as “The Seven Sacraments”, “The Five Pillars”, “The Life of Christ”, “The Prophet Muhammad” or “The Ten Commandments”.