"god exists" <Why is this a relevant argument?

[Tiberius]

"god is true, "god is real, or "god is there, are all self reflexive statements.

It doesn't matter if statements are self-reflexive. What matters is if the statement can be true or false. If it is (and is declarative) then it is a logical proposition.

The reason why "god exists" cannot be a sentence is because there is no predicate (nothing is actually said about "god). A sentence requires an object, subject, and a predicate.

Nothing is said about god??? I think you'll find that the statement "God exists" says that God...exists. How is that not saying something about God? Just as "Jeremy paints" says something about Jeremy (that he paints), "God exists" says something about God (that he exists). Such statements are either true or false, and are therefore logical propositions.

The predicate basically links the subject and object in some way, or says something about either the subject or object, but both need to be present.
I hit him. Can constitute a sentence because the subject "I" the predicate (action/verb) "hit", and "him" the object - in this sentence.

Are we talking about philosophy or english language here? Make your mind up, because it matters which context we are talking about statements in.

Also in logic there need to be some sort of claim in any proposition. Such as "god creates ..." or "god seems ..." from this we can look at either noun and tell something about the other in the (usu') diadic statement.

The claim is that God exists. I thought that was rather obvious...

I had to read up a text book about grammar (by myself) after having a shit house english teacher, but I've got a reasonable grasp on usage. I'll go and double check - so give me a chance to correct myself if you know better.

Your time would be better spent reading up on logic statements in philosophy. Grammar doesn't really come into this. We aren't writing a novel, we're talking about logic.