But of the tree of the knowledge of good and evil, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die. Genesis 2:17
The path of truth & error has always laid close together since the begining of time. It was the tree of the knowledge of "good" & "evil"-not the tree of "good" or the tree of "evil".
"Error cannot stand alone, and would soon beccome extinct if it did not fasten itself like a parasite upon the tree of truth. Error draws its life from the truth of God." Evangelism p.589 E.G.W.