Statuette of Isis suckling her son Horus

“The city of Heliopolis was the birthplace of the so-called Ennead (Nine) of Heliopolis. According to this creation myth Atum, the chief god of Heliopolis, miraculously created the first divine couple, Shu (air) and Tefnut (moisture), who in turn produced the next generation of gods, Geb (earth) and Nut (sky). Their union produced two more divine couples: Osiris and Isis, and Seth and Nephthys. These nine gods form the Heliopolitan Ennead. Isis is normally shown as a woman wearing the hieroglyph for "throne" on her head, but due to her association with the goddess Hathor she sometimes wears cow’s horns and a sun-disk.” (Ed Gyllenhaal, label text, Glencairn Museum, Egypt gallery)