An encyclical is a formal letter or document issued by the Pope of the Roman Catholic Church to address important issues or teachings. It serves as a way to communicate the Church's stance on various topics, such as morality, social justice, or faith. Encyclicals are intended for bishops and the faithful, guiding them in understanding and applying Church teachings. These documents often reflect the Church's response to contemporary challenges and can influence both religious and secular discussions. Encyclicals are typically named after their opening words and can be referenced in theological studies and discussions about Catholic doctrine.