Ixthis, you wrote
The eastern Orthodox Christians believe in a single God who is both three and one (triune): Father, Son, and Holy Spirit, "one in essence and undivided". The Holy Trinity is three "unconfused" and distinct divine persons (hypostases), who share one divine essence (ousia)-uncreated, immaterial and eternal. The Father is the eternal source of the Godhead, from Whom the Son is begotten eternally and also from Whom the Holy Spirit proceeds eternally. The essence of God being that which is beyond human comprehension and can not be defined and or approached by human understanding.
According to my understanding, that is what all Western Christians also believe, saving the one difference that Western Christians affirm that the Holy Spirit proceeds from the Father and the Son, by using the Nicene Creed. It's the filoque clause on which the Eastern Church split from the West in 1054. However, although that event caused the Great Schism a thousand years ago, the two branches of the church are sufficiently close to be in communion with each other, i.e. Catholics and Anglicans (Episcopalians) can and do take Holy |Communion in Orthodox churches, and vice versa. And I was interested to read in Wikipedia just now (I searched for the exact date 1054) that "Popes John Paul II and Benedict XVI have recited the Nicene Creed jointly with Patriarchs Demetrius I and Bartholomew I in Greek without the Filioque clause."
Jgnat, you asked Ixthis
What is the Eastern Orthodox position on Satan. Is he seen as a minor god with some powers?
I stand open to correction, but I think you'll find that the Eastern Orthodox position on whether the Devil is seen as a god or not will be the same as my own (Catholic) or that of godrulz, who I believe is Pentecostal...is that correct?
Speaking entirely personally, I believe in one God, who made Heaven and Earth. (Leaving aside Three in One just for the moment.) I think that basic belief is common to all Christians outside the WT, who insist that Jesus is "a god" and Satan too, apparently. There is only one God. Every other conceivable spirit is therefore (according to the general Christian belief which I also hold) exactly just that, a spirit in concept and, for those who believe in them, in actuality. By no means all Christians believe in the existence of such spirits or even the Devil, but for the most part that's an individual belief, not orthodox (with a small o.)
I oberve the disharmony beween yourself and Godrulz, but although he (I assume he is a he and not a she, don't know why) although he is Pentecostalist and I am Catholic, (hey, no longer even feeling like an "unbaptised publisher", hooray! ) it seems to me and he and I are fairly close in belief on many things, though not all.
Jgnat, I think the problem here is that you seem, if I may say so, to be determined to hang on to a concept of gods with a small g, even though I can also see that this is for polemic and that you don't actually believe in them at all. If you were to substitute "spirit" for "god", and in doing so allow for spirits of different levels of power, would that satisfy your reasoning?