According to the Bible Adam and Eve after being casted out from the Garden of Eden for disobeying God for eating the fruit of the Tree of knowledge they conceived Abel and after Abel they conceived Cain. Cain dedicated himself to Agriculture, meanwhile his brother dedicated himself to heard his sheep, they both gave offerings to the lord by burning them so the smoke rises to the heavens, Abel sacrificed a lamb and Cain burned the fruit of the earth.
God was pleased with Abels sacrifice more so than Cains, Cain pondered this, Abel cared for the lamb, and loved it dearly, and thought that God was pleased with a blood sacrifice, so next time that the offering was at hand Cain sacrificed that which he hold dearest, his brother. Cain gave himself a "gift," and the gift was delusion. Using this gift, he thought he killed Abel in an act of love when it was really an act of hate. He used this gift to make pride out of shame, which resulted in being out casted.
And so God cursed Cain to walk the earth forever more. In his travels he met a woman, the first woman ever created, Lillith, Lillith knew all the sexual perversions and she was also out casted so she wouldn’t corrupt Adam, both Lilith and Cain found themselves in the darkness. And so they wandered the earth together, one day Cain said he was hungry and Lilith said to him “Come and drink from me” Cain felt renewed strength flowing through his veins. Cain started to hunt animals and feed on their blood, the dark father and mother founded the first city and called it Enoch. Years passed and God sent angels from the heavens to try to convince Cain that the acts that he committed with Lillith were wrong and that he should seek the lords forgiveness for God loves him. His answer was “I shall return to him, if he comes himself and asks me on his knees to do so”
After this act of defiance every angel that warned Cain about Lillith bestowed upon him a curse that followed all of his childer, each angel uttered this curse to Cain.
Curse you and all of your descendants you shall never feel
The warmth of the flames.
The Light of day.
You shall not have descendants
You shall never rest in Peace
with each of this curses you come to know why kindred are hated by the sun, why the flames no longer turn back the cold of night but is anathema to them, and lastly why they are condemned to wander for eternity like their father once did in a time before time.