All the holy Fathers agree that after the death of antichrist the whole world will be converted, and although some of them assert that the world will last but a few days after his death, while others say a few months, some authorities insist that it will continue to exist many years after. St. Catherine of Sienna, St. Vincent Ferrer, St. Francis of Paula, and a number of other saints have predicted this ultimate universal conversion. Saint John Eudes, page 319, The Admirable Heart of Mary.