the louvin brothers - "satan is real" (from the satan is real lp, available for purchase here.)
current 93 - "lucifer over london" (from the lucifer over london ep, out of print.)

sinner friend, if you're here today, satan is real, too; and hell is a real place, a place of everlasting punishment.

666, it makes us sick / we're sick, sick, sick of 666.