Doctrinal texts are written works that outline the beliefs and principles of a particular religion or ideology. They serve as foundational documents that guide followers in understanding their faith and practices. Examples include the Bible in Christianity, the Quran in Islam, and the Bhagavad Gita in Hinduism. These texts often address key theological concepts, moral guidelines, and rituals. They can be used for study, worship, and personal reflection, helping adherents to deepen their understanding of their beliefs and to connect with their spiritual community.