Who is set and Isis?
For Egyptian gods and goddesses, at least Osiris, Isis, Horus, Set, and Nepthys, it is sort of like reincarnation but not. So, originally Osiris, Isis, Horus, Set, and Nepthys were all brother and sister but then later on the story was told differently with Osiris and Set still being brothers and Osiris being married to Isis and Horus being their son while Set and Nepthys were married.
In the case of Horus the Younger, his mother is Isis, and father Osiris; his uncle is Set and his aunt isNephritis. In the case of Horus the Elder, his mother is Nut and his father is either Ra or Geb; his brothers are Osiris and Set, and his sisters Isis and Nepthys. His wife is either Isis or Hathor.
In the case of the Younger Horus, his mother is Isis and his father is Osiris, with a possible brother in Anubis. in the case of the Elder Horus, his sisters are Isis and Nephthys and his brothers are Osiris and Set; his wife is either Isis or Hathor. His mother is Nut and his father either Ra or Geb.