Soon after the time of Glanville, the system of compurgation received a severe shock from its most important patron, the church. As stated above, in proceedings between ecclesiastics, it was everywhere received as the appropriate mode of deciding doubtful cases. At the same time the absolute character of the compurgatorial oath was too strong an incentive to perjury, ignorant or wilful, for conscientious minds to reconcile themselves to the practice, and efforts commenced to modify it. About 1130 Innocent II., in prescribing compurgation for the Bishop of Trent, accused of simony, orders that the oath of the conjurators shall be simply as to their belief in the bishop’s oath.[200] Gratian inserted this in his _Decretum_, and a commentator soon afterwards speaks of it as an opinion held by some authorities.[201] It was reserved for Innocent III. to give this the full sanction of law as a general regulation. Compurgation was too valuable a resource for churchmen to be discarded, and he endeavored to check the abuses to which it led, by demanding conjurators of good character, whose intimacy with the accused would give weight to their oaths.[202] At the same time, in endeavoring to remove one of the objections to its use, he in reality destroyed one of its principal titles to respect, for in decreeing that compurgators should only be obliged to swear to their belief in the truth of the principal’s oath,[203] he attacked the very foundation of the practice, and gave a powerful impulse to the tendency of the times no longer to consider the compurgator as sharing the guilt or innocence of the accused. Such an innovation could only be regarded as withdrawing the guarantee which had immemorially existed. To recognize it as a legal precept was to deprive the proceeding of its solemnity and to render it no longer a security worthy the confidence of the people or sufficient to occupy the attention of a court of justice.