In talking about the god, and defining what the term ‘god’ means, we use words that are pretty well understood as applied to people and things. God ‘exists’; god ‘knows’; god ‘loves’; god ‘wants’; etc. But when applied to god, these terms lose critical parts of what makes those terms understandable.
-As a finite being with limited means, it makes sense for me to ‘want’ things. The same can’t be said of an all-powerful god: this must be the the world that god ‘wants’, becuase otherwise it would be otherwise. Even the idea of competing desires couldn’t be coherent in a god that designed the universe and all its limitations.
-When a human ‘loves’ another human, there are a number of things that that could mean, but they all seem to hinge on humanity (or biology): romantic love is related to copulation; familial love is related to biological similarity; and platonic love is related to common interests and social connections. Perhaps it can be said that familial love could apply to god, as he ‘wants’ to see his creation succeed, but this merely pushes the question back to the first point, of god ‘wanting’.
-When we come to know things, we do so do in two ways: experientially, such as hearing a noise and knowing that you hear it; or deductively, such as hearing a noise and knowing that the water is boiling in the kitchen? (I mean knowledge in a more colloquial sense, because the problems I mean to raise are not epistemological problems, but reference problems when we ascribe the same colloquially accepted language to god) But god, who has no physical sensory apparatus and thus cannot experience (as well as being atemporal, and thus cannot easily be labelled by temporal words such as ‘experience’) and who knows everything always, and thus cannot truly be said to deduce (as well as being temporal, deduction seems to put some knowledge above or before others logically), cannot be said to know in a sense in any way similar to our own knowledge.
All this provides deep problems for creating a description of a supreme being that is meaningful, leaving problems of coherence aside. If the words we use cannot be meaningfully applied to god, the statement ‘god exists’ cannot mean anything even if we take ‘existence’ to be an attribute that could otherwise meaningfully be applied to god (although I don’t think that it is, for reasons similar to those listed for other concepts).
The simple solution to the problem might be to say that in our use of these concepts, they are analogous to those we mean to ascribe to god. For instance, when we say ‘god loves us’ we mean 'god feels about us similar to the way that we feel about our children (or family members, etc.). But this still misses something crucial of god’s other characteristics: god’s position with respect to us is significantly different from our with respect to anything. As such, the analogy is necessarily an exceedingly weak one, and that is for the concept of ‘love’, likely the concept about which our understanding of god is most comprehensible. When we look at words like ‘want’ or ‘know’, the situation is significantly more dire. Our understanding of knowledge cannot begin to capture a knowledge that is not subject to the epistemological worries I mentioned earlier.
This critique is in the direction of a positive disproof of ‘god’, but by itself it is more of an extreme agnostic position: not only can we not know whether god exists, but we cannot coherent apply concepts enough to god to know what it means to not know whether or not god exists.