If you can get people to believe in absurdies you can get them commit atrocities.

Absurdities:

• The earth is less than 6000 years old.
• If you die a martyr, you will get 70 virgins upon your death.
• If you don't believe me, you will burn in hell for eternity.
• An invisible being who created the universe needs you to worship him, so much so he died to get you to worship him.
• There is an invisible, indetectable thing inside you, your soul, that can exist independently of your body.
• Something that happened 2000 years ago is relevant to you today.

Atrocities:

• Child abuse by preists
• mass rape in Guinea
• suicide bombers
• "gay bashing"
• beheading of "infidels"
• killing of abortion doctors
• genocide and "ethnic cleansing"

Faith is delusion, and mass delusion is extremely dangerous. We need to be intellectually vigilant, question everything, and hold all teaching accountable to reason. Reason is the greatest defense against faith.