Analysis of information sources in references of the Wikipedia article "Toà thẩm giáo" in Vietnamese language version.
The popular fear of Popery focused on the persecution of heretics by the Catholics. It was generally assumed that, whenever it was in their power, Papists would extirpate heresy by force, seeing it as a religious duty. History seemed to show this all too clearly. [...] The Inquisition had suppressed, and continued to check, religious dissent in Spain. Papists, and most of all, the Pope, delighted in the slaughter of heretics. 'I most firmly believed when I was as boy', William Cobbett [born 1763], coming originally from rural Surrey, recalled, 'that the Pope was a prodigious woman, dressed in a dreadful robe, which had been made red by being dipped in the blood of Protestants'.
Ludovico is so immediately settled in heaven by the poet that some commentators have divined that Michelangelo is voicing heresy, that is to say, the denial of purgatory.
Thomas More, in an elaborate defense of his friend, written to a cleric who accused Erasmus of heresy, seems to admit that Erasmus was probably the author of Julius.
Obstinate heretics, refusing to abjure and return to the Church with due penance, and those who after abjuration relapsed, were to be abandoned to the secular arm for fitting punishment.
... in this period the more influential ecclesiastical authorities declared that the death penalty was contrary to the spirit of the Gospel, and they themselves opposed its execution. For centuries this was the ecclesiastical attitude both in theory and in practice. Thus, in keeping with the civil law, some Manichæans were executed at Ravenna in 556. On the other hand, Elipandus of Toledo and Felix of Urgel, the chiefs of Adoptionism and Predestinationism, were condemned by councils, but were otherwise left unmolested. We may note, however, that the monk Gothescalch, after the condemnation of his false doctrine that Christ had not died for all mankind, was by the Synods of Mainz in 848 and Quiercy in 849 sentenced to flogging and imprisonment, punishments then common in monasteries for various infractions of the rule.
[...] the occasional executions of heretics during this period must be ascribed partly to the arbitrary action of individual rulers, partly to the fanatic outbreaks of the overzealous populace, and in no wise to ecclesiastical law or the ecclesiastical authorities.