In ancient Egyptian mythology, the fields of Aaru are the heavenly paradise where Osiris rules once he had displaced Anubis in the Ogdoad.The ancient Egyptians believed that the soul resides in the heart, and so, upon death, the Weighing of the Heart occurred. Those souls which balance the scales are allowed to start a long and perilous journey to the Field of Reeds, where they will exist in pleasure for all eternity. Hearts heavy with evil tip and fall into the crocodilian jaws of the demon Ammit. After this "second death", the soul is doomed to restlessness in Duat.