This medieval Irish work recounts the author's motivation and rationale for writing three books on the Holy Scriptures, prompted by the commands of his father and the encouragement of the Christian community. He reflects on the historical context and spiritual significance of the Scriptures, emphasizing the importance of obedience to divine commands despite personal inadequacies. The work is structured into three volumes, focusing on the Pentateuch, the Prophets, and the New Testament, with a goal to clarify the divine governance of creation and to present the historical accounts without delving into allegorical interpretations. The author seeks validation from readers regarding the significance of his work.