Originally Posted by Darshka
You do not know everything about yourself by being yourself, because you can not be aware of things you don't know. Therefore, logically, it is not possible to declare that you know everything because it's not possible to be aware of things that you are not aware of. Therefore, regardless of whether he is omniscient or not, he can not know he knows everything, and therefore cannot know everything, and therefore can not be omniscient.
Trying to make hay out of technicalities on words like 'omniscient' are silly games that children play (on both sides), and have nothing to do with whether or not God exists. It might be good practice in rhetoric or basic logic for those who need it though.
Here's an argument against the existence of God:
1.) God is perfect.
2.) God is everywhere (omnipresent).
3.) If God is perfect, than he would be the perfect soccer player.
4.) If God is everywhere, then he would always be off-sides.
5.) If God is always offsides, then he would be the worst possible soccer player.
6.) God cannot be both perfect and omnipresent.
Now, either you're a dumb atheist and thinks this argument proves something because you misunderstand what logic is for...or you should be pausing to think about what the words we use are really for.