Thanks for your explanations alfonso.
Ok, let's look at that.
I'm not sure that's the best way to begin. Sure, this was a car or a golf ball or a piece of pre-cambrian rock we might want to define what we are discussing, but God is so much more an abstract concept that, imo, by his very nature seems to defy definition.
Ok. But I can conjure up an abstract concept of God here and now which by its nature, wouldn't fit into any religion I know of. For a God, or an abstract notion of one God to occur to many people, it has to have description if not some idea of a meaning. It has to be described in some way does it not, for the abstract concept to come about.?
However, I submit that we do all understand what God is -- even atheists (who may well claim otherwise) -- even though we don't have a crystal clear definition.
Respectfully no. We only know at this stage God is abstract. People living in deep isolated jungles may well NOT know of an abstract God. They make their God "concrete" - a tree the sun etc. They may have no god abstract or otherwise. I know of a golf ball because I addressed one once

and because it makes sense. An abstract golf ball, without its associated purposes, descriptions and definitions makes very little sense to me or to someone in a jungle I think.
Much in the same way that as children growing up we understood concepts like love and beauty before we were ever handed a dictionary definition of them.
This has been covered many times before. Children know love for reasons that have and are becoming even more understandable as emotions and reaction to events. A sophisticated chemical reaction put simplistically, but perfectly understandable without prior specific instruction. Easy to comprehend on a very basic level and without trivialising, a tiny baby 'loves' its mother because it knows where warmth, safety and food comes from. We call it love, the baby doesn't seem to display anything but an inherent desire for survival. Not an inherent desire for the abstract notion of a God. Mother and child is a beautiful scene to another human onlooker. The care and survival of the human race is naturally appealing.
Rather than starting with a definition, I think a definition ought to be the end point of an investigation into God.
Well....Ok but I am reluctant, for definition still seems key to the discussion
Now, although I don't have such a definition, I think we can still make some kind of comments on the nature of God. However, before doing that I should address the question below:
So I ask again alfonso, just what is so complicated about religion
Stu, if it's going to be a matter of "BZZT, your religion is wrong. next please", then okay, it's all very simple. If all you want to do is leave it at that, then I don't think I can accomodate you.
No alfonso, I am all ears for more than just a "BZZT"....I am listening....
However, if we're willing to look religion in terms of its place in humanity, the meaning humans derive from it, evaluating notions of "religious truth", understanding, or attempting to understand, the mysteries of life, of the universe and of humanity's relationship to them, and the nature and validity of the kinds of ideas that emerge from such a reflection, then religion becomes quite complex indeed.
Well only if you want to lump all that together in one great unexplained homogeneous blob, can you conceivably make it unnecessarily complex. But you are in any event only making abstractness itself complex, not God, so where would that get us anyway?
Why not start with
"if we're willing to look religion in terms of its place in humanity" .
We can look at the pros and cons (I would say mostly cons - as even today it causes awful conflicts in it's place in humanity) but that will still not establish a religious truth other than it is a "truth" (not a truth). That is to say it is by any means at this stage of our discussion, an idea based on no substantial evidence which in turn has no other supporting information which stands primary scrutiny, which all revolves around an abstract idea of a God.
If I have an abstract idea, in science I must support it many ways with substantial and observable repeatable evidence as to why my abstract idea is true. That is immeasurably more meaningful, practical and useful to humanity.
"Attempting to understand, the mysteries of life"
...but science and scientific endeavor patently and clearly appears to do exactly that in a much more effective and real way than an abstract idea of a God.
I could continue but do you get my drift?
Lastly, if you have an abstract God you
need to clearly show why your abstract God is all the things you say it is, because my abstract God is always more "true" than yours (I simply +1 more to its attributes over yours) and it will make just as much abstract sense.