Sittin,
Nice to "meet" you.
It would take someone as thoroughly steeped in biblical nonsense as a theologian to invent something as wack as "The mark of Cain".
Why is it that here in 2008 almost all churches are racially segregated?
Religion is not a force for acceptance, love, universalism, or liberty. It is more likely to foster tribalism, us/them mentalities, I'm right/you're wrong thinking, prejudices, bigotries, and irrationalism.
DF