It is the Great Schism which would appear to have converted Wycliffe into a declared opponent of the papacy. Pondering on the problems of Church and State which had hitherto occupied his energies, he was now forced to the conclusion that the papal, and therefore the sacerdotal power in general must be assailed. It was a logical deduction from his central thesis, the doctrine of “dominion founded on grace.” He organised a band of preachers who should instruct the laity in the mother tongue and supply them with a Bible translated into English. Thus under his auspices Oxford became the centre of a widespread religious movement. There the poor or simple priests, as they were called, had a common abode, whence, barefooted and clad in russet or grey gowns which reached to their ankles, they went forth to propagate his doctrines. And since the Friars, who owed their independence of the bishops and clergy to the privilege conferred upon them by the popes, were strong supporters of the papal autocracy, Wycliffe attacked them, by his own eloquence and that of his preachers, and that at a time when their luxurious and degenerate lives laid them open to popular resentment.

Already (1356) Richard Fitzralph, Archbishop of Armagh, who like Wycliffe had been a scholar of Balliol and in 1333 had held the office of Vice-Chancellor, had attacked the Friars for their encroachments upon the domain of the parish priests; their power, their wealth, their mendicancy, he maintained, were all contrary to the example and precepts of Christ and therefore of their founder. He charged them also with encroaching upon the rights of parents by making use of the confessional to induce children to enter their convents and become Friars. This was the reason, he asserted, why the University had fallen to one-fifth of its former numbers, for parents were unwilling to send their sons thither and preferred to bring them up as farmers.

This attack furnished Wycliffe with a model for his onslaught. In his earlier days he had treated the Friars with respect and even as allies—“a Franciscan” he had said, “is very near to God”—for then he had been attacking the endowments of the Church, and it was the monks or “possessioners” and the rich secular clergy to whom he was opposed. In theory the Mendicant Orders were opposed to these by their poverty and in practice by their interests.

But the Friars were the close allies and chief defenders of the Pope. Now, therefore, when Wycliffe passed from political to doctrinal reform, his attitude towards the Mendicant Orders becomes one of uncompromising hostility.

He and his followers denounced them with all the vehemence of religious partisanship and all the vigour of the vernacular. Iscariot’s children, they called them, and irregular Procurators of the Fiend, adversaries of Christ and Disciples of Satan.

Wycliffe indeed went so far as to attribute an outbreak of disease in Oxford to the idleness and intellectual stagnation of the Friars.

“Being inordinately idle and commonly gathered together in towns they cause a whole sublunary unseasonableness.”

Finally, Wycliffe aimed at undermining the power of the priesthood by challenging the doctrine of Transubstantiation. According to this doctrine the priest had the power of working a daily miracle by “making the body of Christ.” Wycliffe, in the summer of 1381, first publicly denied that the elements of the sacrament underwent any material change by virtue of the words uttered by the priest. The real presence of the body and blood of Christ he maintained, but that there was any change of substance he denied.

The heresy was promulgated at Oxford. An enquiry was immediately held by the Chancellor (William Berton) and twelve doctors, half of them Friars, and the new “pestiferous” doctrines were condemned. The condemnation and injunction forbidding any man in future to teach or defend them in the University was announced to Wycliffe as he was sitting in the Augustinian Schools, disputing the subject. He was taken aback, but at once challenged chancellor or doctor to disprove his conclusions. The “pertinacious heretic,” in fact, continued to maintain his thesis, and made a direct appeal, not to the Pope, but to the King. The University rallied to his side and tacitly supported his cause by replacing Berton with Robert Rygge in the office of Vice-Chancellor. Rygge was more than a little inclined to be a Wycliffite. And Wycliffe meanwhile appealed also to the people by means of those innumerable tracts in the English tongue, which make the last of the schoolmen the first of the English pamphleteers. Whilst he was thus entering on his most serious encounter with the Church, suddenly there broke out the Peasant Revolt. The insurrection blazed forth suddenly, furiously, simultaneously and died away, having spent its force in a fortnight. It was a sporadic revolt with no unity of purpose or action except to express the general social discontent. But the upper classes were seriously frightened and some of the odium was reflected on the subversive doctrines of Wycliffe, whose Lollard preachers had doubtless dabbled not a little in the socialism which honey-combed the Middle Ages.

When order was again restored, Courtenay, now become Archbishop, began to take active measures to repress the opinions of Wycliffe. He summoned a synod at the Blackfriars in London to examine them. The first session was interrupted by an earthquake, which was differently interpreted as a sign of the divine approval or anger. The Earthquake Council had no choice but to condemn such doctrines as those they were asked to consider, that God ought to obey the devil, for instance, or that no one ought to be recognised as Pope after Urban VI.