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