Well, I already had a simple argument posted on the other thread, so I'll start with that before I go to sleep.
The only unambiguous material referring to the god of the Bible (YHWH) is the Bible itself.
The Bible is supposed to be the perfect word of YHWH, according to itself and most believers.
The Bible contains a myriad of errors. Some are inconsistencies with itself, others are inconsistencies with reality.
Ergo, there are only two logical conclusions, although they both lead to the same final conclusion.
Conclusion A: YHWH doesn't exist.
Conclusion B: YHWH is fallible, and therefore does not exist as described in the Bible (and for all purposes and effects isn't YHWH, as YHWH is the god described in the Bible).