The Pharaoh asked: “Who is the greatest of the gods?”
“I am not” said Horus.
“Anubis is” said Isis.
“Isis is lying”, said Anubis.
Only one god was telling the truth, the other two were lying.
Who is the greatest?
Assume Horus is the greatest
“I am not” said Horus (LIE)
“Anubis is” said Isis (LIE)
“Isis is lying” said Anubis (TRUTH)