Sasha now teaches Reagel the efficient use of Chakras. Chakras are the guiding forces of magic, they infuse spirit with soul and with it, classify them with experience. They are the reason that magic exists, for our soul gain experience to implicate and structurize spirits into forms of efficient use of manipulation of mana to create what we call by then, wizardy and magic.
The enforcement of chakras to perform magic comes in a better way and shape from form, the foundations of it, and the manipulations of said form to conjunct and perform well into the environment. Which requires thinking, theory, planning, and philosophy. This is why wizardy such as physics and engineering tops in rank in magically manipulating the environment.
It is through the method of chakra control that physics exists. The chakras of planets, stars, and white holes. Even people can use magic through the chakras of spirits, in it manifest forms from thoughts and consciosness in our minds.
For God, according to Sasha, have incorporated this wisdom so that we may speak, we may hear, we may experience his thoughts and emotions as reality. But demons made sure to destroy this faith of fates by inducing in the concept of evil. From which no love arises and destruction is always tending the cause of people's hearts and minds.
For that, evil arise upon the fate of people, always guided and manipulated, always fooled and coerce to do wrong. There is a future for which Nobe Mendelle saw in Earth before he took Jiroshi Takageme. He saw the future of a boy who was bullied by everyone in a world manipulated by lies and deceit. So he took the boy in and teach him the ways of a Nordus Casum.
There is a fate worse than death. It is through dying by the evil hands of people trying to become fate. They control, through lies the emotions of people. Make them believe that there is salvation upon dying multiple of times in a single life - or undead life. It is a curse brought by God to evil people that believe in this, a curse he will leave as a gift to people dumb enough to believe such a lie by the devil.
That is the path that Nobe Mendelle considered so he made sure to take Jiroshi Takageme to Agravenni to become its hero. Also making Jiroshi and his friends that were bullied to become strong. This is why he is chosen, someone who is strong but acted weak against forces of liars, deceivers, and malordained in thought and philosophy. A concept of a hero starts with self, not by aiding and allying with the powerful of the sinful realm of Earth.