The early teachings of Leo and Pelagius were revived as soon as heresy became alarming. Early in the twelfth century Honorius of Autun proclaimed that the rebels against God who were obdurate to the voice of the Church must be coerced with the material sword. In the compilations of canon law by Ivo and Gratian the allusions to the treatment of heretics by the Church are singularly few, but there are abundant citations to show the duty of the sovereign to extirpate heresy and to obey the mandates of the Church to that end. Frederic Barbarossa gave the imperial sanction to the theory that the sword had been intrusted to him for the purpose of smiting the enemies of Christ, when he alleged this in 1159 as a reason for persecuting Alexander III. and supporting his antipope, Victor IV. The second Lateran Council, in 1139, orders all potentates to coerce heretics into obedience; the third, in 1179, sanctimoniously says that the Church does not seek blood, but it is helped by the secular laws, for men will seek the salutary remedy to escape bodily punishment. We have seen how inefficacious all this proved; and in despair of voluntary assistance from the temporal princes the Church took a further step by which it assumed for itself the responsibility for the material as well as the spiritual punishment of heretics. The decree of Lucius III. at the so-called Council of Verona, in 1184, commanded that all potentates should take an oath before their bishops to enforce the ecclesiastical and secular laws against heresy fully and efficaciously. Any refusal or neglect was to be punished by excommunication, deprivation of rank, and incapacity to hold other station, while in the case of cities they were to be segregated and debarred from all commerce with other places.[198] The Church thus undertook to coerce the sovereign to persecution. It would not listen to mercy, it would not hear of expediency. The monarch held his crown by the tenure of extirpating heresy, of seeing that the laws were sharp and were pitilessly enforced. Any hesitation was visited with excommunication, and if this proved inefficacious, his dominions were thrown open to the first hardy adventurer whom the Church would supply with an army for his overthrow. Whether this new feature in the public law of Europe could establish itself was the question at issue in the Albigensian crusades. Raymond's lands were forfeited simply because he would not punish heretics, and those which his son retained were treated as a fresh gift from the crown. The triumph of the new principle was complete, and it never was subsequently questioned.