Before a soul was born into earth land, they are asked to meet the three gods. The god of earth, the god of destiny and the god of death. The soul is required to make a promise with the trinity gods and they have to live up to the promise until their time in earth is up.
The soul will promise to the god of destiny that he will not defy what was written already, then he will meet the god of earth and swear on its land that he will return the body when his time is up, and will meet the god of death and make an oath on it that his life will never be taken away by his own earthly hand, or be taken by any entity from earth, the soul is required to protect his life until the god of destiny has completed his path. If any of the promises from the trinity gods were broken, a grave consequence will cause their soul to burn in eternity. That is the gravest sin a soul can commit.
But what about the gods? Are the gods even capable of having a sin? They said that the eyes are the windows to a soul, if you are going to stare on the eyes of a god, what will you see?
I shall not tell you how a god has committed a sin, what is the sin, and what is his past. It is forbidden to talk about the sin of this particular god. but I am going to show you his journey of discovering what is his sin...
The sin that made the god fall from his glory.