Couple of comments I would like to add,

Jesus taught in pictures a lot for a reason, it helps us understand.
The picture of the trinity (a word introduced by Christians and NOT in the scriptures) or the concept of God in three parts as it were, that has helped me to begin to understand, is that of water.

If you take a pool of water, extract some and freeze it, it becomes solid. Take a bit more and heat it and it becomes steam. Now it is still the same quantity of the same stuff only in 3 different forms.

I've also heard it expressed as the parts of an egg.(To the carnal mind of course this is all foolishness, so be prepared for that.)

The "three" (triune) thing is used over and over in creation. As are many patterns of the creator and creation. All to teach us stuff-if we want.

The feminine thing in the Bible is pretty cool too. It was not "left out" of the God equation. No absence of the feminine force (but remember, scripture tells us there is no male and female in the spirit world as we know it.) There is much made in the Word about the Church being the Bride. The body of Christ is the feminine(not Jesus). There is much teaching about the preciousness and value of her. The scripture speaks a lot about this concept. No feminist should miss checking it out.

For my Jewish friend "oncefamous", all I can say is "Oy". If you need mention of the Spirit of God in the Hebrew Scriptures read the accounts of Samuel or Elijah or Elisha. I am half Jewish, and even to me Reform is to Judism what Unity is to Christianity. No disrespect to my Reform or Unity friends, it just is what it is, and ain't what it ain't. Judism is deep, full of meaning (daily and prophetically) and dare I say "ponderous"? To keep the law is a full-time job. Anything less is, well, NOT keeping the law. To disregard it, or change it for convenience is some other made up religion or watered down Judism. Which you have every right to follow if you wish. I am not trying to condemn you, or hurt your feelings-just saying what I observe. If you can shed some light on it, I'd like to see/hear it.

Finally, to Wysiwyg-good explanation!