Why and how would this affect the understanding of the nature of evil? You never understood it then, you're just trying to sound cool saying something like that.
Let me guess, in your mind he would appear and kill, punish, banish everyone you consider to be evil? That's what Jesus Christ would do, this is your understanding of Jesus Christ?
As long as bloodthirsty judgement filled retards like you exist, nothing will be right with the world. You're the one manifesting this evil.