What if God told you to kill the president?

[SNOWBALL]

Let's say you are praying to god one night and he communicates to you that you must kill the president. What's your line and why? Assume that you believe in god and are basically a good member of your religion.

edit: also, who the president is and what you think of him doesn't matter for this question IMO. I hate Bush, but that doesn't matter in my decision.

edit: FWIW, I would probably obey god or just stop believing in him altogether.