Another active assistant of Huss, especially in his improvement and distribution of the Bohemian Bible, was Jacobellus of Mies, known under the name Jacobellus of the [sacramental] Cup, on account of his zeal for the general introduction of the communion in both forms. He wrote commentaries on some of the epistles, sermons, religious hymns, etc. He too was a professor in the university of Prague. In the year 1414 Huss was summoned to appear before the Council of Constance, to exculpate himself before the united theologians of all the Christian nations of Europe. Without the least reluctance, and rather with rejoicing at the opportunity of justifying himself from the extravagant charges brought against him by his enemies, and of demonstrating publicly the truth of his doctrines, he obeyed this call. Provided with a safe conduct from the emperor Sigismund, and accompanied moreover by several Bohemian noblemen at the express order of king Wenceslaus, he undertook the journey without fear for his personal safety, and arrived on the fourth of November at Constance. Here, before he was permitted to appear in the presence of the general Council, he had to undergo several private audiences before a few cardinals; at one of which, about three weeks after his arrival, he was arrested, cast into prison, and without being tried or even heard, kept more than _six months_. When the news of this treachery reached Bohemia, it was felt by the whole people as a national insult. Three petitions, signed by nearly the whole body of the nobility, were in the course of time successively tendered to the Council; and as the two first were without avail, the third was accompanied by one to the emperor, in which he was reminded of his broken word, in terms so strong,--he having pledged his imperial honour for the safety of Huss,--that at length the 5th of June was fixed for a public hearing. Here however every attempt of Huss, not merely to justify himself, but even to speak, was frustrated by the most indecent and tumultuous clamour of the assembled clergy, who loaded him with invectives and reproaches. In the two following audiences he was indeed allowed a hearing, at the special demand of the emperor, who had been disgusted and offended by the indecent behaviour of the Council. Huss was now permitted to justify himself at large upon all the forty articles brought against him, most of them founded on his writings by the frequent aid of the most unfair deduction; but although he exculpated himself completely from some of the charges, yet he himself acknowledged so many others, that the Council could only be confirmed in its previous determination to condemn him as an obstinate heretic. A month was allowed him, to give in his final answer. During this time cardinals and bishops tried their eloquence to persuade him to recant; especially at the instigation of the emperor, who wished to save his life on account of his own pledged honour.