Well, Alex, I also seem to recal him mentioning a universal prohibition of killing to Moses, no? That's the problem with that old Judeao-Christian God- no consistency! ;-)

God said to Abraham, "Kill me a son."
Abe said, "Man, you must be puttin' me on!"
God said "No!", Abe said "What?!"
God said "You can do anything you want, Abe,
But the next time you see me comin', you better run!"

(with apologies to R. Zimmerman)