[1] Cf. Labbe, _Concilia_, vol. ix, col. 1042.
The Council of Toulouse in 1119, presided over by Calixtus II, and the General Council of the Lateran, in 1139, were a little more severe; they not only issued a solemn bull of excommunication against heretics, but ordered the civil power to prosecute them: _per potentates exteras coerceri præcipimus._[1] This order was, undoubtedly an answer to St. Bernard's request of Louis VII to banish Arnold from his kingdom. The only penalty referred to by both these councils was imprisonment.
[1] Council of Toulouse, can. 3, Labbe, vol. x, col. 857; Council of Lateran, can. 23, ibid., col. 1008.
The Council of Rheims in 1148, presided over by Eugenius III, did not even speak of this penalty, but simply forbade secular princes to give support or asylum to heretics.[1] We know, moreover, that at this council Éon de l'Etoile was merely sentenced to the seclusion of a monastery.
[1] Can. 18, Labbe, _Concilia_, vol. x, col. 1113.
In fact, the execution of heretics which occurred during the eleventh and twelfth centuries were due to the impulse of the moment. As an historian has remarked: "These heretics were not punished for a crime against the law; for there was no legal crime of heresy and no penalty prescribed. But the men of the day adopted what they considered a measure of public safety, to put an end to a public danger."[1]
[1] Julien Havet, _L'hérésie et le bras seculier au moyen âge_, in his OEuvres, vol. ii, p. 134.
Far from encouraging the people and the princes in their attitude, the Church through her bishops, teachers, and councils continued to declare that she had a horror of bloodshed: _A domo sacerdotis sanguinis questio remota sit_, writes Geroch of Reichersberg.[1] Peter Cantor also insists on the same idea. "Even if they are proved guilty by the judgment of God," he writes, "the Cathari ought not to be sentenced to death, because this sentence is in a way ecclesiastical, being made always in the presence of a priest. If then they are executed, the priest is responsible for their death, for he by whose authority a thing is done is responsible therefor."[2]
[1] _De investigatione Antichristi_, lib. i, cap. xlii, 1oc. cit., pp. 88, 89.