Council of Trent: Session XXV, Reformation, Chapter III

CHAPTER III. The sword of excommunication is not to be rashly used: when an execution can be made on property or person, censures are to be abstained from: the civil magistrates shall not interfere herein.

Although the sword of excommunication is the very sinews of ecclesiastical discipline, and very salutary for keeping the people in their duty, yet it is to be used with sobriety and great circumspection; seeing that experience teaches, that if it be rashly or for slight causes wielded, it is more despised than feared, and produces ruin rather than safety. Wherefore, those excommunications, which, after certain admonitions, are wont to be issued with the view as it is termed, of causing a revelation, or on account of things that have been lost or stolen, shall be issued by no one whomsoever, but the bishop; and not then, otherwise than on account of some circumstance of no common kind which moves the mind of the bishop thereunto, after the cause has been by him diligently and very maturely weighed ; nor shall he be induced to grant the said excommunications by the authority of any Secular person whatever, even though a magistrate; but the whole shall be left to his own judgment and conscience, when, considering the circumstances, the place, the person, or the time, he shall himself judge that such are to be resolved on.

As regards judicial causes, it is enjoined on all ecclesiastical judges, of whatsoever dignity they may be, that, both during the proceedings, and in giving judgment, they abstain from ecclesiastical censures, or interdict, as often as an execution on the person or property can, in each stage of the process, be effected by them of their own proper authority ; but in civil causes, which in any way belong to the ecclesiastical court, it shall be lawful for them, if they judge it expedient, to proceed against all persons whatsoever, even laymen, and to terminate suits, by means of pecuniary fines, which, by the very fact of being levied, shall be assigned to the pious places there existing; or by distress upon the goods, or arrest of the person, to be made either by their own, or other officers; or even by deprivation of benefices, and other remedies at law. But if the execution cannot be made in this way, either upon the person, or goods, of the guilty, and there be contumacy towards the judge, he may then, in addition to the other penalties, smite them also with the sword of anathema, if he think fit.

In like manner in criminal causes, wherein an execution can as above be effected upon the person or goods, the judge shall abstain from censures ; but, if that execution cannot easily be made, it shall be lawful for the judge to employ the said spiritual sword against delinquents ; provided however the character of the offence so require, and after two monitions at least, and this by public notice. And it shall not be lawful for any civil magistrate, to prohibit an ecclesiastical judge from excommunicating any individual; or to command that he revoke an excomnunication that has been issued; under pretext that the things contained in the present decree have not been observed; whereas the cognizance hereof does not appertain to Seculars, but to ecclesiastics. And every excommunicated person, who, after the lawful monitions, does not repent, shall not only not be received to the sacraments, and to communion, and intercourse with the faithful, but, if, being bound with censures, he shall, with obdurate heart, remain for a year in the defilement thereof, he may even be proceeded against as suspected of heresy.

Translation: J. Waterworth, The Canons and Decrees of the Council of Trent (1848), Hanover Historical Texts Project transcription (1995).