The bull of union with the Greeks, solemnly read in the cathedral of Florence and the high point of the Council of Ferrara-Florence. Working through the questions that had divided East and West, it defines that the Holy Spirit proceeds eternally from the Father and the Son as from one principle and by one spiration, and that the Latin addition of the Filioque to the Creed was lawfully made; that the Body of Christ is truly confected in unleavened and in leavened wheat bread alike, each priest following the usage of his own Church; that the souls of those who die in charity but have not yet made satisfaction are cleansed after death and helped by the suffrages of the living, that the fully purified are received into heaven and see God clearly, and that those who die in mortal sin descend to hell; and that the Roman Pontiff holds the primacy over the whole Church as successor of Peter, with the order of the ancient patriarchal sees set out. The union it proclaimed did not endure in the East. The Holy See publishes the text in Latin and Italian.