It must not be supposed that this doctrine of _Attrition_, and its evident effect in deadening the conscience and in lowering the standard of morality, had the undivided support of the theologians of the later Middle Ages, but it was the doctrine taught by most of the Scotist theologians, who took the lead in theological thinking during these times. It was set forth in its most extravagant form by such a representative man as John of Paltz in Erfurt; it was preached by the pardon-sellers; it was eagerly welcomed by _indifferent_ Christians, who desired to escape the penalties of sin without abandoning its enjoyments; it exalted the power of the priesthood; and it was specially valuable in securing good sales of Indulgences, and therefore in increasing the papal revenues. It lay at the basis of the whole theory and practice of Indulgences, which confronted Luther when he issued his _Theses_. History shows us that gross abuses had always gathered round the practice of Indulgences, even in their earlier and simpler forms. The priests had abused the system, and the power of issuing Indulgences had been taken from them and confined to the bishops. The bishops, in turn, had abused the privilege, and the Popes had gradually assumed that the power to grant an Indulgence belonged to the Bishop of Rome exclusively, or to those to whom he might delegate it; and this assumption seemed both reasonable and salutary. The power was at first sparingly used. It is true that Pope Urban II., in 1095, promised to the Crusaders an Indulgence such as had never before been heard of—a complete remission of all imposed canonical penances; but it was not until the thirteenth and fourteen centuries that Indulgences, now doubly dangerous to the moral life from the new theories which had arisen, were lavished even more unsparingly than in the days when any bishop had power to grant them. From the beginning of the fourteenth century they were given to raise recruits for papal wars. They were lavished on the religious Orders, either for the benefit of the members or for the purpose of attracting strangers and their gifts to their churches. They were bestowed on cathedrals and other churches, or on individual altars in churches, and had the effect of endowments. They were joined to special collections of relics, to be earned by the faithful who visited the shrines. They were given to hospitals, and for the upkeep of bridges and of roads. Wherever they are met with in the later Middle Ages, and it would be difficult to say where they are not to be found, they are seen to be associated with sordid money-getting, and, as Luther remarked in an early sermon on the subject, they were a very grievous instrument placed in the hand of avarice.