Shu
Shu (Su) was the god of dry air, wind and the atmosphere. He was also related to the sun, possibly as an aspect of sunlight. He was the son of the creator god, father of the twin sky and the earth deities and the one who held the sky off of the earth. He was one of the gods who protected Amun-Ra on his journey through the underworld, using magic spells to ward off Amun-Ra's enemy, the snake-demon Apep. As with other protector gods, he had a darker side - he was also a god of punishment in the land of the dead, leading executioners and torturers to kill off the corrupt souls.
He was generally depicted as a man wearing an ostrich feather headdress, holding a scepter and the ankh sign of life. Sometimes he is shown wearing the sun disk on his head, linking him to the sun. Mostly, he was shown with his arms raised, holding up the goddess Nut as the sky, and standing on the body of Geb.
As a god of the wind, the people of Egypt invoked him to give good wind to the sails of the boats. It was he who was the personification of the cold northern winds; he was the breath of life - the vital principle of all living things. His bones were thought to be clouds. He was also called to 'lift up' the spirits of the dead so that they might rise up to the heavens, known as the 'light land', reached by means of a giant 'ladder' that Shu was thought to hold up.
A god of the wind, the atmosphere, the space between the sky and the earth, Shu was the division between day and night, the underworld and the living world. He was a god related to living, allowing life to flourish in Egypt with his breath of life. He was the bridge between life and death, both a protector and a punisher in the afterlife.