Jeff,
It is very hypocritical to assume God's existence in order to mock him, but when logic enters the picture you choose to assume that God doesn't exist.
If you say God exists then you open yourself up to a line of reasoning.
If you say that God doesn't exist, you open yourself up to another line of reasoning.
On both counts, the atheist fails the test of Logic.
This is not the case for a Born Again Believer. This person is inhabited by God himself and posesses absolute proof of God's existence. No, born again believer can testify otherwise without being a liar.
It is that simple. The only option that you have is to accept the testimony or call us liars. That really is about all there is to it.