Sin is the rejection of authority. Man concentrates on himself, staggering feverishly round his own axis. It reaches its peak in self-deification. It rejects God’s leadership and makes an idol of man’s vital instincts while ignoring the true God. Hence it also ignores the fountain of life. This means that in its real essence it is denial of life, disintegration and destruction, spiritual and psychic “death.” No wonder that it leads to bodily death as well. “The wages of sin is death” (Romans 6:23).
The death of the body is thus not merely a natural event, but has to be understood ethically. The sinless man need not die. Death is judgment. It is both the essence of sin and its necessary consequence.
~ Erich Sauer, [The King of the Earth]