Significance of Septet
The Egyptian Septet refers to Sothis, also known as the Dog-star. The text connects this star to the sky withdrawing its life, and it associates Sothis with the living being Unas, who is described as the son of someone. The Septet, in this context, seems to hold significance related to life, death, and celestial beings within Egyptian beliefs.
The below excerpts are indicatory and do represent direct quotations or translations. It is your responsibility to fact check each reference.
Classical concept of 'Septet'
Meaning of Septet in Ancient Egyptian mythology, history and philosophy:
Egypt
Books
From: The Literature of the Ancient Egyptians
(1) This is Sothis, the Dog-star, the sky hath withdrawn the life of the star, behold Unas a living being, the son of.[1]