The fall is not simply a question of rational deduction. It is a point of divine revelation. It refers to what we call original sin. Original sin does not refer primarily to the first or original sin committed by Adam and Eve. Original sin refers to the result of the first sin—the corruption of the human race. Original sin refers to the fallen condition in which we are born.
It is commonplace to hear the statement, “people are basically good.” Though it is admitted that no one is perfect, human wickedness is minimized. Yet if people are basically good, why is sin so universal?
It is often suggested that everybody sins because society has such a negative influence upon us. The problem is seen with our environment, not with our nature. This explanation for the universality of sin raises the question, how did society become corrupt in the first place? If people are born good or innocent, we would expect at least a percentage of them to remain good and sinless. We should be able to find societies that are not corrupt, where the environment has been conditioned by sinlessness rather than sinfulness. Yet the most dedicated-to-righteousness communes we can find still have provisions for dealing with the guilt of sin.
Since the fruit is universally corrupt we look for the root of the problem in the tree. Jesus indicated that a good tree does not produce corrupt fruit. The Bible clearly teaches that our original parents, Adam and Eve, fell in sin. Subsequently, every human being has been born with a sinful and corrupt nature. If the Bible didn’t explicitly teach this, we would have to deduce it rationally from the bare fact of the universality of sin.