Apep
A four letter word for Wednesday's god is Odin.
dieu
idol
Egyptian diety
There is no Egyptian God that's name with the letter x.
Well, if you mean the One True God, aka Jesus Christ then a 4 letter word is Lord.
Eros, the god of love.
Sobek, the Corcodile God of Egypt
Thor, Ullr and Loki are all four letter god names.
DIKE
Bes- the Egyptian dwarf god and jester of the gods (:
Abba- An intimate term for God as father. According to the OED. area