Knowledge Of Sin

Romans 3:19-20 (ESV)

19 Now we know that whatever the law says it speaks to those who are under the law, so that every mouth may be stopped, and the whole world may be held accountable to God. 20 For by works of the law no human being will be justified in his sight, since through the law comes knowledge of sin.

The tree of the knowledge of good and evil was placed in the Garden to separate the light from the darkness. This knowledge allows us to choose between the two and gives what we need to eat from the tree of life. This was always the plan just as Jesus has always been the way. The cross is the meeting place between God and man that enables us to eat of the fruit of the Spirit who is the bread of life.