(This one's a bit heavy, I'm afraid!)
I've been thinking about God as "word" - as in "In the beginning was the word" in the Gospel of John. It's also implicitly there in the words "God said, 'let there be light' in The book of Genesis, the start of the bible.
There are echoes of this with the Greek writer Judaeus Philo of Alexandria (15 BC - 45 CE), who taught that the logos ('word' but in a general sense) was an intermediary between God and the cosmos. Then there is an echo of God as "word" in the Qur'an (Surah 96), where the presence of God to Muhammad, that started Islam, came as a word (namely the word "Iqra", meaning "Read", despite that Muhammad could not read). 
For a Christian (which I am, at least in the sense that I voluntarily asked to be christened, and I go to church quite a bit) God is both the ultimate creator of all universes, and a presence so close to Jesus that he called him "Father".
The best I can do is a fuzzy notion that pure being, in itself , is beyond words.