In Genesis 2:17 God tells Adam not to eat from the tree of the knowledge of good and evil. Then in Genesis 3:5 the serpent deceived Eve into desiring the fruit of that tree, so she ate from it. Verse 7 states that the eyes of Adam and Eve were immediately opened to know that they were naked. Presumably this realisation of their nakedness is a result of knowing good and evil, so it was an instant impartation of the knowledge.
However, in thinking about this recently I started to wonder if perhaps the sin and evil which resulted from this event are the expected effect: Adam and Eve were already experiencing ‘good’ even if they were unaware of any other state of being. To understand the knowledge of good and evil they would also have to experience evil.
One of the fundamental questions people have regarding belief in God is, “How can a good God allow evil?” The explanation must surely be that evil was demanded by the first humans reaching out to take the knowledge of good and evil. We cannot have such knowledge without knowing both what good is and what evil is.
I assume that theologians have discussed this at great length and explained it far better than my stumbling thoughts, but this is a new idea to me.