Feast of the Immaculate Conception

In 1439, the Council of Basel, in schism with Pope Eugene IV who resided at the Council of Florence,^[28] declared the Immaculate Conception a "pious opinion" consistent with faith and Scripture; the Council of Trent, held in several sessions in the early 1500s, made no explicit declaration on the subject but exempted her from the universality of original sin; and by 1571 the revised Roman Breviary set out an elaborate celebration of the Feast of the Immaculate Conception on 8 December.^[29]