This Ethiopian apocryphal work is a detailed account of a prayer spoken by the Virgin Mary in the city of Bartos, where she intercedes for Matthias, a disciple held captive. It emphasizes the unique nature of her prayer, known only to the Holy Trinity, and illustrates Mary's deep connection with her son, Jesus Christ. The narrative includes her invocation of angels and celestial beings, asserting the prayer's power to heal, free captives, and protect believers from evil. The text concludes with Jesus affirming the efficacy of the prayer and promising blessings to those who invoke it.