Original sin
Original sin, which Eastern Christians usually refer to as ancestral sin, is, according to a doctrine proposed in Christian theology, humanity's state of sin resulting from the fall of man. This condition has been characterized in many ways, ranging from something as insignificant as a slight deficiency, or a tendency toward sin yet without collective guilt, referred to as a "sin nature," to something as drastic as total depravity or automatic guilt by all humans through collective guilt.