When God wanted to create the universe, he had to betray his wife, his only family. God, along with his archangels, fought in a war against her. They barely managed to win, but the Goddess was ultimately locked away, with a mark acting as the key. God relied this mark on his most trusted lieutenant and beloved son, Lucifer.
God's success in the war led to the creation of many galaxies and planets, and numerous realms and lifeforms. He eventually created the Earth, which became the home of humans. However, the mark began corrupting Lucifer, changing him into a spiteful being. When God asked his children, the angels, to bow down to humans, Lucifer refused and was cast out of Heaven.