On this question of good works a violent controversy broke out after the Leipzig /Interim/ (1548). Luther had depreciated entirely the value of good works as a means to salvation. On this point, however, Melanchthon was willing to make considerable concessions to the Catholics, as indeed he did in 1535 and 1548, when he admitted that good works were necessary for acquiring eternal happiness. This view was supported warmly by Major, a professor at Wittenberg, who was denounced by Amsdorf as an opponent of Luther's doctrine of Justification (1551). Amsdorf, Flacius, and others maintained that good works were a hindrance rather than an aid to salvation, while Major clung tenaciously to the position that good works were meritorious. /Majorism/, as the new heresy was called, was denounced in the most violent terms because it involved a return to the doctrine of the Papists. Major was suspended from his office as preacher (1556) and was obliged to make a recantation (1558).

The /Adiaphorist/ controversy broke out in connexion with the Leipzig /Interim/ (1548). In this attempt at reconciliation Melanchthon was not unwilling to yield in many points to the Catholic representatives, and to agree that several of the doctrines and practices of the Church that had been assailed by Luther were at least indifferent and might be admitted. For this he was attacked by Matthias Flacius, surnamed Illyricus[3] on account of the place of his birth, a professor of Hebrew at Wittenberg since 1544. The latter protested against the concessions made by Melanchthon, denounced as impious the union of Christ with Belial, and returned to Magdeburg, where he was joined by Amsdorf and others who supported his contention. He was driven from the city and at last died at Frankfurt in 1575.

The question of man's co-operation in his conversion gave rise to what was known as the /Synergist/ controversy. Luther had laid it down as a first principle that man contributed nothing to the work of his own conversion, but though Melanchthon agreed with this view in the beginning, he was disposed at a later period to attribute some activity to the human will, at least in the sense that it must struggle against its own weakness. This view was strengthened and developed by John Pfeffinger, a professor at Leipzig, who taught publicly the necessity of man's co-operation (1550), and published a treatise in defence of this position (1555). Pfeffinger's doctrine aroused the opposition of Amsdorf, Flacius, and the other leaders of the orthodox Lutheran party. Leipzig and Wittenberg joined hands to support the doctrine of co-operation, while the majority of the professors at Jena took the opposite side. One of the latter however, Strigel, supported Pfeffinger, and a public disputation was held at Gotha under the presidency of Duke John Frederick. The Lutheran party demanded the punishment of Strigel and his supporters so vigorously that the Duke was obliged to arrest them, but, annoyed by the attempt of the Lutherans to set up a religious dictatorship to the detriment of the supremacy of the civil ruler, he established a consistory composed of lawyers and officials whose duty it was to superintend the religious teaching in his territory. The anti-Synergists, having protested against this measure as an infringement of the rights of the spiritual authority, were expelled, and Jena entered into line with Wittenberg and Leipzig for the defence of Synergism. With the change of rulers came once more a change of doctrine. The princes, alarmed by the violence of the controversy, assembled a conference at Alternburg in 1568 which lasted four months without arriving at any agreement. On the accession of the Elector August the leading opponents of the Synergists, including a large number of the superintendents and preachers, were deprived of their offices.

By his lectures and teaching at the University of Hemstadt George Calixt[4] gave rise to a new and prolonged discussion known as the /Syncretist/ controversy. The Duke of Brunswick having refused to accept the /Formula of Concord/, the professors at the university which he had founded felt themselves much more free in their teaching than those in other centres of Lutheranism. Calixt denied the ubiquity of Christ's body and the attribution of divine qualities to Christ's human nature. Though a strong opponent of several distinctly Catholic or Calvinist beliefs he saw much that was good in both, and he longed for a reunion of Christendom on the basis of an acceptance of the beliefs and practices of the first six centuries. He was charged with aiming at a confusion of all religions, and in proof of this charge it was alleged that he rejected the Lutheran teaching on Original Sin and on man's natural powers of doing good even before justification, that he defended the meritorious character of good works, the supremacy of the Pope, at least /de jure ecclesiastico/, and the sacrifice of the Mass (1639). In 1643 a disputation was held, in which Hornejus, a colleague of Calixt, supported his doctrine especially on the meritoriousness of good works. The appearance of Calixt at the conference summoned by the King of Poland in Thorn (1645) to promote a reunion with Rome, and the friendly attitude which he had adopted towards the Catholics and the Calvinists helped to increase the suspicions of his adversaries. Calixt died in 1656, but for years after his death the spirit of toleration, that he had done so much to foster, was one of the distinguishing features of the University of Helmstadt. It was during this controversy that the Branch Theory, namely, that Catholicism, Lutheranism, and Calvinism formed three divisions of the one true Church, was formulated clearly for the first time.

Amongst the Calvinists the extremely crude doctrine on Predestination taught by Calvin soon proved too much for the faith of many of his followers. Several of them, holding fast by Calvin's teaching, contended that regardless of Original Sin God had created some for glory and others for damnation, that Christ had died only to save the elect, and that to these alone is given the grace necessary for salvation (Supralapsarians). Others, horrified by the cruelty of such a doctrine, maintained that the decree predestining some to hell followed the prevision of Original Sin (Infralapsarians). This view had been put forward by Theodore Koonhort, and had found considerable support, but it was attacked by the majority of the Calvinist ministers, and a bitter controversy ensued. The orthodox party summoned to their assistance Arminius[5] (Hermanzoon), a distinguished young Calvinist preacher, who had attended the lectures of Beza in Geneva, but whose strict views were modified considerably by a sojourn in Italy. Instead of supporting the Supralapsarians, his sympathies were entirely on the side of the milder doctrine, and after his appointment to a professorship at Leyden (1603) he became the recognised head of the Infralapsarians. His chief opponent was Gomar, also a professor at Leyden, who accused Arminius of Semi-Pelagianism. Arminius, while repudiating such a charge as groundless, rejoined by pointing out that according to his adversaries God was the author of sin. Both appeared before an Assembly of the States in 1608 to defend their views, and though the majority were inclined to favour Arminius, silence was imposed upon the two principals and upon their followers. In the next year Arminius himself died (1609), but his doctrines were upheld by Episcopius supported by the learned jurist, Oldenbarneveld, and the Humanist, Grotius. In replying to the charge of heresy brought against them the followers of Arminius presented to the States a Remonstrance embodying their doctrines (1610) and on this account they were styled Remonstrants. The States adopted a neutral attitude at first, but, as the Gomarists or anti-Remonstrants violated the injunction of silence by founding separate communities, the authorities were inclined not merely to tolerate but to support the Remonstrants.

Maurice, Prince of Orange, Stadtholder of Holland, anxious to strengthen his position by allying himself with the orthodox Calvinists, began a bitter campaign against the Arminians. Oldenbarneveld and Grotius were arrested and brought before the synod of Dordrecht (1617), at which the former was condemned to death, while Grotius was imprisoned for life though he succeeded in escaping after two years. Another Synod was held at Dordrecht (Nov. 1618-April 1619) to which representatives came from all parts of Holland, the Palatinate, England, and Scotland. From the beginning the followers of Arminius were admitted only as accused persons, and were called upon to defend themselves against the charge of heresy. Against them the authority of Calvin was urged as if it were infallible. As the Arminians were suspected of republican principles William of Orange and his supporters were decidedly hostile. The Remonstrants, despairing of getting an impartial hearing, left the Synod. The five Articles contained in the Remonstrance were discussed, and decrees were issued regarding those portions of Calvin's doctrine that had been called in question. It was agreed that faith is the pure gift of God to be given by God to those whom He has predestined by His own mercy and without any reference to their merits for election; that Christ died only for the elect; that man's will does not co-operate in the work of his conversion; and that the elect are exempted from the dominion of sin, so that although they may be guilty of serious crimes they can never become enemies of God or forfeit the glory to which they were predestined. The decrees of the Synod of Dordrecht were received generally in Holland, Switzerland, France, in the territory of the Elector of Brandenburg, and in Hesse, but in the other portions of Calvinist Germany and in the greater part of England they met with serious opposition.

/Anabaptists/.[6]—The belief that baptism could not be conferred validly on infants who have not arrived at the use of reason was held by many of the Middle Age sectaries, and was revived at the time of the Reformation. Its supporters, claiming for themselves the liberty of interpreting the Scriptures according to their own judgment, maintained that they had divine sanction for their teaching. The leaders of the sect in Saxony and Thuringia were Thomas Munzer and Nicholas Storch. They represented the extreme left of the Lutheran party maintaining the equality of men and the community of property. In Zwickau, where the movement originated, violent disturbances broke out, and the leaders retired to Wittenberg where they were joined by Carlstadt. It required the presence of Luther himself to prevent the city from falling completely into their hands. Owing to the dangerous character of the radical principles defended by the Anabaptists several princes of Germany joined hands for their suppression. They were defeated at the battle of Frankenberg (1525) and Munzer was arrested and put to death. Before his execution he returned to the Catholic Church.

Despite this defeat the party made considerable progress in West Germany and in the Netherlands, where the people were so disgusted with their political and social conditions that they were ready to listen to semi-religious, semi-social reformers like the Anabaptists. They took possession of the city of Munster in Westphalia. The two principal leaders were John of Leyden (a tailor) and John Matthyas or Matthieson (a baker), the former of whom was appointed king. The city was besieged and captured in 1535, and the principal Anabaptists were put to death. In Switzerland the movement made considerable progress. From Switzerland it spread into southern Germany, but the triumph of the princes during the Peasants' War destroyed the hopes of the extreme Anabaptists, and forced the sect to discard most of its fanatical tendencies. The leader of the more modern Anabaptist sect was Menno Simonis, a priest who joined the Society in 1535, and after whom the Anabaptists are called frequently Mennonites.[7] The latter rejected infant baptism and Luther's doctrine of Justification by faith alone. They protested against oaths even in courts of law and capital punishment.

/Schwenkfeldians/.[8]—This sect owes its origin to Caspar von Schwenkfeld (1489-1561), a native of Silesia, who, though attached to many of the doctrines of Luther, believed that Luther was inclined to lay too much stress on faith and external organisation to the exclusion of real religion. He thought that more attention should be paid to the mystical and devotional element, in other words to the personal union of the individual soul with God. According to him, this should be the beginning and end of all religion, and if it could be accomplished organisation and dogma were to be treated as of secondary importance. He rejected infant baptism, regarded the sacraments as mere symbols, denied the Real Presence of Christ in the Eucharist, and maintained that in the Incarnation the human nature of Christ was in a sense deified. Schwenkfeld held several interviews with Luther in the hope of winning him over to his opinions but without success. Owing to his quarrel with the master, Schwenkfeld was banished from Strassburg in 1533, and condemned by a Lutheran assembly at Schmalkald in 1540. His doctrines found considerable support in Silesia and in the states of several German princes, though it was only after Schwenkfeld's death that his followers began to organise themselves into separate communities. Owing to persecution many of them fled to America where they settled in Pennsylvania (1634). In 1742 the sect was tolerated in Prussia.

/Socinianism/.[9]—The doctrine of the Blessed Trinity found many opponents in Latin countries about the time of the Reformation. Michael Servetus, Gentilis, Campanus, and Blandrata, attacked the Trinity from different points of view, but by far the most dangerous adversaries of the doctrine were Laelius Socinus (1525-1562) and his nephew Faustus Socinus (1539-1604). The former of these became a member of a secret society founded at Vicenza (1546) for the discussion and propagation of anti-Trinitarian views (1546). The principal members of this body were Gentilis, Blandrata, Alciatus, and Laelius Socinus, a priest of Siena and a man who stood in close relationship with some of the leading Lutherans and Calvinists. When the society at Vicenza was suppressed several of the prominent members fled to Poland for asylum. Laelius Socinus, though he remained at Zurich, was looked up to as the guiding spirit of the party till his death in 1562. His nephew Faustus Socinus then stepped into the place vacated by his uncle. The anti-Trinitarians in Poland, who had begun to style themselves Unitarians since 1563, had established themselves at Racow. In 1579 Faustus Socinus arrived in Poland, at a time when the anti-Trinitarians were divided into opposing factions, but in a short while he succeeded in winning most of them over to his own views. The doctrines of Socinus and of his principal disciples were explained in the /Catechism of Racow/ (first published in 1605) and in the numerous theological works of Socinus. In 1638 the Socinians were banished from Poland, and violent measures were taken against them by most of the Catholic and Protestant princes of Europe.