A litany is a form of prayer that consists of a series of petitions or invocations, often directed to God or a saint. It typically involves a leader who recites a phrase, followed by a congregation's response. This structure allows for communal participation and reflection, making it a popular practice in various religious traditions, including Christianity. Litanies can vary in length and content, addressing specific themes such as repentance, thanksgiving, or intercession. They are often used during worship services, special occasions, or personal devotion, helping to foster a sense of unity and focus among participants.