Maybe its a reading comprehension thing.
Since you seem to know everything, what do you think the meaning of the Dendera reliefs is?
It's not a matter of what one "thinks," since the entire thing is explained right there on the walls in glyphs.
It is a well-known Horus myth, in this case it was depicted during the Ptolermaic period so it uses Horus' Greek name - Harsomptus. But the myth itself goes much further back into Egypt's past.
All explained here.