The rabbi of the German community, Zevi Ashkenazi, called Chacham Zevi, was much excited at the news of Chayon's presence in Amsterdam. This man, whose father had belonged to the most zealous Sabbatians, while he himself and his son, Jacob Emden, were destined to fight against them with vehement zeal, was gifted with a clear head, and combined thoroughness with acuteness in the study of the Talmud. In his eighteenth year he had been consulted as an expert in the Talmud. Pampered, sought after, married while young to the daughter of a rich man at Buda and thereby rendered independent, he became proud, self-conscious, and vain of his knowledge of the Talmud. On account of his Talmudical learning he was invited to be chief rabbi of the German community at Amsterdam (1710); he preferred to be called Chacham. Here he looked down with great contempt upon his Portuguese colleagues, especially upon Solomon Ayllon, and would never regard him as his equal in rank. "Chacham Zevi wishes to rank higher even than the prophet Moses," was the judgment passed upon him by Ayllon.

As soon as the name of Chayon reached the ears of the German Chacham, he connected it with a former enemy of his at Bosna-Seraï in Bosnia, where Zevi had been rabbi for a short time, and he immediately intimated to the Portuguese authorities that it would be wise to show no sort of favor to the stranger, as he was a man of evil notoriety. Nehemiah Chayon explained that the mistake in his identity was caused by similarity of names, and behaved so very humbly towards Chacham Zevi, that the latter soon informed the council that he had nothing to urge against the stranger, whose identity he had mistaken. Chayon appeared to have removed every obstacle from his path at Amsterdam, when Moses Chages, of Jerusalem, who was in Holland, sounded the alarm against him, perhaps because he feared him as a Palestinian rival. The heretical work printed at Berlin was put before him for examination, as some members of the council did not trust their Chacham Ayllon. Scarcely had he looked into it, when he raised the cry of heresy. In fact, it did not need lengthy search in the book to find an explicit enunciation of the doctrine of the Trinity. The German Chacham, having had his attention drawn by Moses Chages to Chayon's suspicious doctrine, again notified, almost ordered, the Portuguese council, to banish instead of favoring the stranger. The council, not disposed to accept such abrupt orders, requested Chacham Zevi either to point out the heretical passages in Chayon's book, or to join with some members nominated by the council as a committee to examine it. Chacham Zevi, at the advice of Chages, rejected both proposals flatly, saying that as rabbi he was not obliged to bring forward proofs, but simply to pronounce final judgment. Still less did he choose to take council with Ayllon, as this would have been tantamount to recognizing him as a Talmudist of equal rank with himself. The haughty behavior of the Chacham, on the one hand, and Ayllon's sensitiveness, on the other, kindled a spark into a bright flame.

The Portuguese Chacham had reason to feel himself slighted and to complain. His own congregation had passed him over in this matter, shown distrust towards him, and set his opponent over him as a higher authority. Besides, he appears to have feared the cunning adventurer, who if persecuted might reveal more than was desirable of Ayllon's past history and relations to the Salonica heretics. He felt it his interest to remain on Chayon's side and protect him against the threatened banishment from Amsterdam. It was not difficult for him to prejudice a member of the Portuguese council, Aaron de Pinto, a resolute, unbending, hard man, indifferent to spiritual problems, against the German Chacham, and persuade him of his duty to guard the independence of the old, respectable, and superior Portuguese, against the presumptuousness of the hitherto subordinate German, community. Ayllon converted the important question of orthodoxy and heresy into one of precedence between the communities. De Pinto treated the affair in this light, and the other members of the council conformed to his resolute will. He straightway rejected the interference of the German Chacham in an affair of concern only to the Portuguese community, broke off all negotiations with him, and commissioned Ayllon to appoint a committee of Portuguese to examine and report on Chayon's work. Ayllon added to the college of rabbis four men, of whom only one understood the question. This one hesitated to join the committee, but was compelled to do so. The others were totally ignorant of theology, and accordingly dependent on Ayllon's judgment. Ayllon and the council, that is, Pinto, made the members of the committee swear to let no one see the copies of Chayon's work handed to them for examination, in fact, to keep everything secret until the final judgment was pronounced. The petty question of tolerating or expelling a begging adventurer thus attained great importance.

Whilst the Portuguese committee was still apparently engaged in the business of examination, Chacham Zevi, in conjunction with Moses Chages, hastened to pronounce sentence of excommunication against Chayon and his heretical book, because "he sought to draw Israel away from his God and to introduce strange gods (the Trinity)." No one was to have dealings with the author until he recanted his error. His writings in any case were to be committed to the flames. This sentence of condemnation was printed in Hebrew and Portuguese, and circulated as a pamphlet. A great portion of the objections raised by these two zealots against Chayon's writings was equally applicable to the Zohar and other Kabbalistic books. Short-sighted as they were, they saw only the evil consequences of the Kabbalistic errors, not their original cause.

Great was the excitement of the Jews of Amsterdam over this step. Chacham Zevi and Moses Chages were affronted and abused in the streets by Portuguese Jews, and it was asserted that Ayllon employed disreputable people for this purpose. When Chages appeared the rabble shouted, "Stone him, slay him." Attempts at reconciliation failed; partly through the dogmatism of Ayllon, who refused to admit himself wrong, partly through the firmness of De Pinto, who simply had in view the dignity of the Portuguese community. Pamphlets increased the bitter feeling.

The quarrel of the Amsterdam Jews made a great stir elsewhere, and was the cause of party strife. Ayllon and De Pinto forbade the members of their community, under threat of excommunication, to read pamphlets, or to express themselves either verbally or in writing upon the matter. They also hastened the delivery of the verdict, which, however, was drawn up by Ayllon alone. It declared, in direct opposition to the decision of Chacham Zevi and Chages, that Chayon's work taught nothing offensive or dangerous to Judaism; it contained only the doctrines found in other Kabbalistic writings. It was officially made known in the synagogues (August 14, 1713) that Chayon was acquitted of the charge of heresy brought against him, and that he had been innocently persecuted. The day after, the original cause of the strife was carried in triumph into the Portuguese chief synagogue, and to the vexation of his opponents, almost worshiped. The false prophet, who had openly declared, "Come, let us worship false gods," was loaded with homage by the Portuguese who had staked life and property for the unity of God. They cheered Chayon in the synagogue, and cried "Down with his adversaries." In secret Chayon probably laughed at the complications he had caused, and at the credulity of the multitude. De Pinto took care that Chacham Zevi should not be supported by his own German community, but should be left exposed, without protection, to the rough treatment of his opponents. He found himself entirely isolated, almost like a person under interdict.

But help came to Chacham Zevi from without. The rabbis whose pretended letters of recommendation Chayon had prefixed to his work declared them to be forged. The deepest impression was made by the letters of the highly respected, aged rabbi of Mantua, Leon Brieli, who, well acquainted with the past history of the impostor, unmasked him, and approved of the sentence of condemnation against his heretical book. Brieli wrote urgently to the Amsterdam council, and to Ayllon, in Hebrew and Italian, imploring them not to lend their authority to so bad a cause. But they remained stubborn, answered him politely, yet evasively. The quarrel rose higher every day in the Amsterdam community; every one took one side or the other, defending his view with bitterness, passion, and frequently with vigorous action. Peace vanished from this pattern community, and dissension was carried into family life. Matters had gone so far that the leaders could not yield. Ayllon and De Pinto went to greater lengths in their obstinacy. They suggested that the Portuguese council summon Chacham Zevi, the rabbi of the German community (over whom it had no authority whatever), before its tribunal, with the intention of shaming him or of inducing him to recant. When he paid no heed, it laid him and Moses Chages under the ban, most strictly forbidding the members of the community to have dealings with them, protect them, or intercede for them with the civic authorities.

As though the council and the rabbinate had been infected by Chayon's baseness, they committed one meanness after another. In justification of their course of action they distorted the actual state of the case, and made use of notorious falsehoods. They encouraged, or at least countenanced, Chayon in calumniating his opponents with the vilest and most revolting aspersions, not only Chacham Zevi and Chages, but even the wise and venerable rabbi, Leon Brieli, and supported Chayon in all his audacities. The Portuguese council and the rabbinate, or rather De Pinto and Ayllon, for their colleagues were mere puppets, persecuted Chayon's opponents as though they were lost to all feeling of right. With Moses Chages they had an easy game. He lived on the Portuguese community; and when they withdrew the means of sustenance, he was compelled to leave Amsterdam with his helpless family and migrate to Altona. They also pressed Chacham Zevi hard, annoyed him, accused him before the civil authorities, and prevented any one's assisting him. He, too, left Amsterdam, either De Pinto procuring his banishment at the hands of the magistrates, or Chacham Zevi, in order to anticipate scandalous expulsion, going into banishment of his own accord. He repaired to London, in the first instance, then by way of Breslau to Poland, and was everywhere honorably received and treated.

His opponents, Chayon, Ayllon, and De Pinto, were not able to enjoy the fruits of their victory. The apparently trivial dispute had assumed large dimensions. Almost all the German, Italian, Polish, and even some African communities with their rabbis espoused the cause of the persecuted Chacham Zevi, and hurled sentences of excommunication upon the unscrupulous heretic. These anathemas were published, and unsparingly revealed Chayon's villainy, bringing to light the sentence passed upon him years before at Jerusalem. The exposure of his character by witnesses who came from countries where his past history was well known, contributed to ruin the false prophet of the new Trinity.

But the Portuguese of Amsterdam, or at least their leaders, would not drop him, either because they believed his audacious lies or from a sense of shame and obstinacy. They saw clearly, however, that Chayon must take steps to calm the storm raised against him. They therefore favored his journey to the East, providing him with money and recommendations to influential Jews and Christians, who were to aid him in loosing the ban passed upon him in the Turkish capital. But the journey proved full of thorns for Chayon; no Jew admitted him into his house, or gave him entertainment. Like Cain, curse-laden, he was obliged to flee from place to place in Europe. At last he had to take ship in haste to Constantinople. He was followed by fresh accusations of heresy, not only from Chages and Naphtali Cohen, but also from the highly esteemed Kabbalist Joseph Ergas, and the London preacher David Nieto, who calmly exposed, in Hebrew and Spanish, the heresy, falsehood, and villainy of this hypocritical Sabbatian.