Significance of Heru-Tuati
Heru-Tuati, according to Egyptian texts, is Horus of the Tuat. He emerges with specific forms from a coiled serpent. Heru-Tuati commands the Hours within a certain City to engage in battle. This fight is waged to support the entity situated on the horizon. The text emphasizes Heru-Tuati's role as a leader and a figure connected to both the earthly and spiritual realms.
The below excerpts are indicatory and do represent direct quotations or translations. It is your responsibility to fact check each reference.
Classical concept of 'Heru-Tuati'
From: The Book of Am-Tuat
(1) Heru-Tuati saith unto the Hours who are in this City to fight on behalf of Him that is on the horizon.[1]
From: The Book of Gates
(1) HERU TUATI is Horus of the Tuat, from whom the head cometh forth, and the forms [in which he appeareth] from the coiled [serpent].[2]