"God would not do that"

OK, I heard a person that I know say something extremely stupid recently. His statement was, "God would not do that." It was in reference to something he thought was heinous.
So, I began to think about that. To say that you worship the proverbial omniscient god and then turn right around and say what that entity would or would not do is far more arrogant than Richard Dawkins could ever be.

Think about it for a second. To say that your chosen entity knows all, and for you to say what it would do, implies that you know the mind of the entity and all that it knows. Else, how could you "know" that it would not do something. The reason is that you would have to know all of the choices it has and all of the reasons for making those choices. Obviously an impossible feat.

The real reason for the statement is, of course, not that we have people running around with knowledge senior to that of some deity, but that it is a rationalization of a flawed belief system.
If you are the type of person that needs religion to tell you not to harm other people, or steal things, or whatever, then you should remove yourself from this world so that the rest of us with brains do not have to be hampered by your silly existence.