That's a very important question, Lek, particularly since (in our little hypothetical) you would hope to assume to know that difference. I'm sure I'm not the only one envisioning a scenario involving you being led away in handcuffs and insisting that "God" made you do it.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'