These north doors would serve as a votive offering to celebrate the sparing of Florence from relatively recent scourges such as the Black Death in 1348. Many artists competed for this commission and a jury selected seven semi-finalists. These finalists include Lorenzo Ghiberti, Filippo Brunelleschi, Donatello and Jacopo della Quercia, with 21-year-old Ghiberti winning the commission. At the time of judging, only Ghiberti and Brunelleschi were finalists, and when the judges could not decide, they were assigned to work together on them. Brunelleschi's pride got in the way, and he went to Rome to study architecture leaving Ghiberti to work on the doors himself. Ghiberti's autobiography, however, claimed that he had won, "without a single dissenting voice." The original designs of "The Sacrifice of Isaac" by Ghiberti and Brunelleschi are on display in the museum of the Bargello.