The Book of Overthrowing Apep is a ritual complex aimed at defeating Apep, the serpent who obstructs Ra and threatens the ordered passage of the sun. The surviving text combines spoken formulas with prescribed physical acts. Budge's descriptions identify ritual actions including spitting on Apep, trampling him with the left foot, piercing him with a lance, binding him, cutting him with a knife and destroying his image by fire.

The ritual works through repetition. Apep is attacked not only as a physical enemy but through his name, soul, shade and associated hostile powers. Wax figures and written images are treated as ritual embodiments of the enemy. The text prescribes burning and repeated recitation at significant times so that the hostile force is continually subdued.

The Bremner-Rhind Papyrus also preserves two important creation accounts within the Apep material. The creator speaks of coming into being before the differentiated world, creating through divine power and bringing forth Shu and Tefnut. In the ritual setting, creation itself becomes part of the argument against chaos: the ordered cosmos established by the creator is renewed as Apep is defeated.

The manuscript held by the British Museum is EA 10188. The museum identifies the Book of Overthrowing Apep in columns 22-32 and dates the papyrus to 305 BCE according to the colophon. E. A. Wallis Budge published the material in earlier and later public-domain works and in 1910 issued the British Museum volume Facsimiles of Egyptian Hieratic Papyri in the British Museum, with Descriptions, Translations, etc.

The downloadable Mythopouch source file is a historical source reader rather than a reproduction of a modern edition. It brings together the source identity, ritual structure, prescribed actions, creation material and historical publication context needed to read the separate Mythopouch retelling alongside the public-domain Budge witness.