Knowing the truth is not the same as intellectual knowledge; instead, one must walk on the path of truth. This is the reason why it is deceitful and hard to accept for many. To put in a simple term, one must walk the walk in order to be able to maintain one knows the truth. Otherwise, one does not possess the truth but merely have an intellectual understanding.
How many times have one known something, yet when faced with the situation act differently.
Every culture and religion holds a piece of truth. The issue is how much of that truth has been modified and shaped for leaders to control for power, status and money. Religions purpose in their origin was humble and respectable, but leaders ego and self-importance tainted the truth. Nowadays, most people join those institutions for acceptance and love from their fellow men. People will choose a religion based upon their family, society and their own need of acceptance from others.
Why? They do it because their parents have done it. They do not want to disappoint them. They want to belong to something bigger than them. They want to assimilate in the American society or mainstream America. They want to be like every one else. They feel good because of the great numbers of people, they do not have enough relatives and join because of the greater support, they do it to look and feel good etc.
There is no good or bad but only Dharma or how the energy runs. However, when a person is selfish or has repeatedly acted with violence, his/her energy turns a certain color because their behaviors and intentions are too far away from Dharma. Men label it as bad depending on their culture, religion etc.
But not from the energy standpoint, it just states a fact that the color is very far and different from its pure state