Djehuty; from “Pathworking with the Egyptian Gods” (Judith Page, Jan A. Malique)

I am Thoth, the skilled scribe whose hands are pure,
A possessor of purity, who drives away evil, who
Writes what is true, who detests falsehood, whose pen
Defends the Lord of All.
BOOK OF THE DEAD

[Djehuty] was one of the earliest Egyptian Neters and was thought to have been a scribe to the gods and keeper of a great library of scrolls, over which one of his wives, Seshat, was the goddess of writing.
According to legend he created the five extra days, known as “epagomenal” days, from the lunar timings to make up the full 365 days of the year. He was also called “Reckoner of Years,” his attributes being a writing tablet and palm-leaf stylus. He was protector of scribes, teachers, writers, mathematicians, speech, and art; in fact, Djehuty was patron Neter to everyone who disseminated knowledge.
He was a measurer and recorder of time, as was Seshat, who was believed to be the author of the spells in the Sacred Book of Per-t em hru, commonly known as the Book of the Dead.
Djehuty was both helper and punisher of the deceased as they tried to enter the underworld. In this role, his other wife was the goddess Ma’at, the personification of order, whose symbol, the feather, was weighed against the heart of the dead to see if they followed ma’at, truth, during their life.
Djehuty was usually depicted as an ibis-headed man or as a full ibis, or with the face of a dog-headed baboon and the body of a man or, again, as a full dog-headed baboon. The ibis, it is thought, had a crescent-shaped beak, linking the bird to the moon. The dog-headed baboon, on the other hand, was seen by the Egyptians as a night animal who would greet the sun each morning with chattering noises just as Djehuty, the moon god, would greet Ra, the sun god, as he rose. He was also associated with the tongue and heart of Ra.

From: “Pathworking with the Egyptian Gods” (by Judith Page, Jan A. Malique)