The Book of Abramelin is a 15th-century grimoire attributed to the Egyptian sage Abramelin. It outlines a system of magic and spiritual practices aimed at achieving knowledge and communication with one's Holy Guardian Angel. The text emphasizes the importance of purification and moral integrity before engaging in magical operations. The book is divided into several sections, detailing rituals, prayers, and instructions for the practitioner. It has influenced various occult traditions, including the works of Aleister Crowley and the Hermetic Order of the Golden Dawn. Its teachings focus on personal transformation and the pursuit of divine wisdom.