Marvel Studios' Disney+ show "Moon Knight" stars Oscar Isaac as museum gift shop employee Steven Grant and mercenary Marc Spector in a bizarre, twisting mystery that involves the gods of Ancient Egypt. However, understanding the full context of “Moon Knight” will require some brushing up on Egyptian mythology.
According to Britannica, there is such a large number of deities in Ancient Egypt that they are often grouped into enneads. An ennead consists of nine deities, and the most notable ennead is the Great Ennead of Heliopolis, which features the gods Steven mentions in Episode 1, as well as Ra, Geb, Nut, Isis, Seth, and Nephthys.
In the comics, the Ennead is from a pocket dimension, and its members are, by and large, the same deities we see in ennead grouping in our own world. However, it appears the MCU's Ennead may differ from real-world mythology in its exact composition, given the numbers at play.