With the beginning of the Third Intermediate Period, the Egyptians began to develop burial customs in line with the capabilities of society at that time. This development included mummification, as well as the trend towards collective burial, which had a profound impact on the development of coffins at that time. The development moved to funerary papyri as well as burial tools such as canopic jars and ushabti statues, in addition to the emergence of new tools such as the statues of "Ptah-Sokar-Osiris", the composite deity that appeared since the Middle Kingdom at least as a result of the presence of similar features between the three deities, as each of "Osiris, Sokar" had the upper hand in this union, while "Ptah" was considered a secondary deity. This type of statue evolved from what is known as "corn mummies", the form made of clay that is represented in the form of a mummified human being in which corn grains are planted so that they grow and flourish in reference to the Osirian resurrection. This takes place during the annual "Osiris" festival in the month of "Khoiak", specifically on one of the twenty-fifths or twenty-sixth days, both of which are associated with the deity "Sokar". Then this type developed from the statues of what is known as the “Osirian statues" which in turn developed into the statues or figures of “Ptah-Sokar-Osiris", these statues witnessed several styles that reached at least five, interspersed with other sub-styles.