But this person who had chosed to side with the light would not manage to keep their heart white all the time because they would need to kill, cheat and hate. That was their nature.
They were not like the angels whom all their dark actions were considered light. Those guys would fall the next minute because you could not tell a person not to have sex, that was torture, right? What could they do with their urges? They have to find something that they could release their overwhelming feelings to. And that would be where these people fail.
What if you tell them to just join the dark side? One would be happy to join the dark side but after some time, they would not feel good in their hearts while doing all these lousy things. They would feel that there was something deep inside them that was not right and that would birth confusion and skeptism in their hearts making them to covet to be on the other white side.
