# Monotheism, the belief in one exclusive god, is fundamentally intolerant.
# It is fundamental to Christian theology that God and his purpose are, in the final analysis, inscrutable to finite human minds. However his commandments must be followed.
# Finally, ethics and morality are ultimately rooted in God's commandments, not in a reasoned analysis.
# These three tenets, when applied singularly or as a cocktail, are largely responsible for the atrocities and horror we will be looking at.

Here the author seems to focus on Christianity. However, I think the same would apply to any mono-theistic type religion.