Far from being disappointed at this treatment, his followers in Constantinople persisted in their delusion. For some days they kept quietly at home, because the street boys mocked them by shouting, "Is he coming? is he coming?" (Gheldi mi, Gheldi mi.) But they soon began again to assert that he was the true Messiah, and that the sufferings which he had encountered were necessary, a condition to his glorification. The prophets continued to proclaim the speedy redemption of Sabbataï and of all Israel. A Turkish dervish filled the streets of Constantinople with prophecies of the Messiah, whose enemies said that Sabbataï's followers had bribed him. Thousands crowded daily to Sabbataï's place of confinement merely to catch a glimpse of him. English merchants whose claims were not satisfied by their Jewish debtors applied to the Messiah. An order in his handwriting, admonishing defaulters to do justice to their creditors, as otherwise they would have no share in his joy and glory, had the best effect. Samuel Primo took care that most fabulous accounts should reach the Jews of Smyrna and those at a distance, of the reverence paid the Messiah by the Turkish authorities. At heart, he wrote, they were all convinced of his dignity. The expectations of the Jews were raised to a still higher pitch, and the most exaggerated hopes fostered to a greater degree. It was looked upon as a palpable miracle that summary Turkish justice allowed him, the rebellious Jew, to live. Did not this act of mercy prove that he was feared? The Turkish government in fact seems to have stood in awe of the Jewish Messiah. The Cretan war was impending, which demanded all the energy of the half-exhausted Turkish empire. The prudent grand vizir, Ahmed Coprili, did not like to sentence him to death, thus making a fresh martyr, and causing a desperate riot among the Jews. Even the Turks, charmed by Sabbataï's manner, and deceived by extraordinary miraculous manifestations, especially by the prophecies of women and children, joined the ranks of his worshipers. It seemed to Coprili equally dangerous to leave Sabbataï, during his absence at the war, in Constantinople, where he might easily add fuel to the ever-increasing excitement in the capital. He therefore commanded, after Sabbataï had been imprisoned in Constantinople for two months—from the beginning of February to April 17—that he be taken to the castle of the Dardanelles at Abydos, where state-prisoners were wont to be kept in custody. It was a mild confinement; some of his friends, among them Samuel Primo, were allowed to accompany him thither. The Sabbatians called this fortress by a mystical name, the Tower of Strength (Migdal Oz).

If Sabbataï Zevi had doubted himself for a moment, his courage rose through his change of abode, the respectful clemency shown him by the divan, and the steady and increasing devotion of the Jews. He felt himself the Messiah again. On his arrival at the castle of the Dardanelles on April 19, the day of preparation for the Passover, he slew a Paschal lamb for himself and his followers, and ate it with the fat, which is forbidden by the laws of the Talmud. He is said, while doing so, to have used a blessing which implied that the Mosaic, Talmudic, and Rabbinical law was abrogated—"Blessed be God, who hath restored again that which was forbidden." At Abydos he held regular court with the large sums of money which his brothers and his rich adherents sent him with lavish hand. His wife Sarah, who was allowed to remain with him, demeaned herself as the Messianic queen, and bewitched the multitude by her charms. From the Turkish capital a number of ships conveyed his followers to the castle of the Dardanelles. The fare on vessels rose in consequence daily. From other countries and continents, too, crowds of Jews streamed to the place of his captivity, in the hope to be deemed worthy of beholding him. The governor of the castle reaped advantage thereby, for he charged the visitors entrance money, and raised it to fifteen or thirty marks a head. Even the inhabitants of the place profited, because they could earn high prices for board and lodging. A veritable shower of gold poured into Abydos. The impression which these facts, industriously circulated and exaggerated, made on the Jews in Europe, Asia, and Africa, and the effect which they produced, are indescribable. With few exceptions all were convinced of Sabbataï's Messiahship, and of a speedy redemption, in two years at the latest. They argued that he had had the courage to go to the Turkish capital, although he had openly proclaimed the dethronement of the sultan, yet had not forfeited his life, but had been left in a sort of mock imprisonment. What more was needed to confirm the predictions of prophets of ancient and modern times? The Jews accordingly prepared seriously to return to their original home. In Hungary they began to unroof their houses. In large commercial cities, where Jews took the lead in wholesale business, such as Amsterdam, Leghorn, and Hamburg, stagnation of trade ensued. In almost all synagogues his initials, S and Z, were posted up with more or less adornment. Almost everywhere a prayer for him was inserted in the following form: "Bless our Lord and King, the holy and righteous Sabbataï Zevi, the Messiah of the God of Jacob." In Europe the eyes of all communities were directed to Amsterdam, the representatives of which adhered to the movement most enthusiastically. Every post-day which brought fresh letters was a holiday for them. The Amsterdam Jews showed their joy openly, and were afraid neither of the Christian population nor of the magistrates. Isaac Naar, of Amsterdam, and the rich Abraham Pereira, prepared themselves for a journey to the Messiah, and the former ironically announced it to the unbelieving Jacob Sasportas. The Hamburg community always imitated that of Amsterdam, or went beyond it. The council introduced the custom of praying for Sabbataï Zevi, not only on Saturday, but also on Monday and Thursday. The unbelievers were compelled to remain in the synagogue and join in the prayer with a loud Amen. And all this was done at the suggestion of the educated physician Bendito de Castro. The believers went so far as to threaten their opponents if they ventured to utter a word of censure against Sabbataï. At Venice, on the Sabbath, a quarrel broke out between the Sabbatians and their opponents, and one of the latter nearly lost his life. When Sabbataï was asked how the Kofrim (unbelievers) should be dealt with, he, or Samuel Primo, answered that they might be put to death without ado, even on the Sabbath; the executors of such punishment were sure to enjoy eternal bliss. A learned Talmudist at Buda, Jacob Ashkenazi of Wilna, whose son and grandson became zealous persecutors of the Sabbatians, was guided by the decision, and declared a member of the community worthy of death, because he would not say the blessing for Sabbataï Zevi. In Moravia (at Nikolsburg) there were such violent dissensions and tumults in consequence of the craze about the Messiah, that the governor of the province was obliged to post up notices to calm men's minds. At Salee, in the north-western part of Africa, the ruling Emir Gailan (Gailand) ordered a persecution of the Jews, because they too openly displayed the hope of their coming redemption.

Many Christians shared the delusive faith in the new Messiah, and the weekly tidings from the East concerning Sabbataï Zevi and his doings made an overwhelming impression on them. At Hamburg, for example, pious Protestants betook themselves to the proselytizing preacher Esdras Edzard, and asked him what was to be done:

"We have certain accounts, not only from Jews, but also from our Christian correspondents at Smyrna, Aleppo, Constantinople, and other places in Turkey, that the new Messiah of the Jews does many miracles, and the Jews of the whole world flock to him. What will become of the Christian doctrine and the belief in our Messiah?"

The attention bestowed by educated classes of Christians upon the extraordinary events, which were published as news of the day, in turn enhanced the credulity of the Jews. In short, every circumstance tended to increase the deception. Only Jacob Sasportas raised his warning voice against the imposture. He sent letters in all directions, here to point out the absurdity of current rumors, there to collect exact information. He failed to obtain striking evidence of Sabbataï's, or Nathan's, roguery. Forged letters and documents were the order of the day; conscientiousness and uprightness had utterly disappeared. Thus the mist of false belief grew thicker and thicker, and one was no longer able to get at the truth.

For three months, from April to July, Sabbataï had been leading the life of a prince in the castle of the Dardanelles, intent only upon his own apotheosis. Either from caprice or at Samuel Primo's suggestion, he declared the fast of the 17th Tammuz to be abolished, because on this day he had realized his Messianic character. Was this a mere freak, or was it done with the intention of accustoming his adherents to the abolition of Rabbinical Judaism? At all events, he appointed the 23d of Tammuz (July 25th), a Monday, to be kept as a strict Sabbath. More than four thousand Jews, men and women, who happened to be at Abydos, celebrated this new Sabbath with great scrupulousness. Sabbataï, or his secretary, sent circulars to the communities directing them to celebrate the next fast, the ninth of Ab, his birthday, as a festival by a special service, with Psalms specially chosen, with eating of choice meats, and the sound of the harp and singing. He is said to have contemplated the annulling of all the Jewish festivals, even the Day of Atonement, and the introduction of others in their stead. But before this could be done, he was guilty in his pride of an act of folly which caused the whole fabric to collapse.

Among the many thousand visitors from far and near, two Poles from Lemberg made a pilgrimage to him, to confirm their faith and feast on his countenance. One was Isaiah, son of a highly-esteemed Rabbinical authority, the aged David Levi (Ture Zahab), and grandson of the no less celebrated Joel Serkes; the other, his half-brother, Leb Herz. From these two Poles Sabbataï heard that in the distant land from which they came, another prophet, Nehemiah Cohen, was announcing the approach of the Messiah's kingdom, but not through Sabbataï. He gave Isaiah Levi a laconic letter to take to his father, in which he promised the Jews of Poland revenge for the massacre by the Cossacks, and peremptorily ordered Nehemiah to come to him with all speed. He laid so much stress on Nehemiah's coming, that he made his followers eager for his arrival. The two Poles traveled back delighted to Lemberg, and everywhere told of the splendor amid which they had seen the Messiah. Nehemiah was ordered to hasten to Sabbataï, and he was not deterred by the length of the journey. When he arrived at Abydos at the beginning of September, he was immediately admitted to an audience which lasted several days. The Polish prophet and the Smyrna Messiah did not laugh in one another's faces, like two augurs, but carried on a grave discussion. The subject of their mystical conversation remained unknown, as may be imagined. It was said to concern the forerunner of the Messiah—the Messiah of Ephraim—whether or not he had appeared and perished, as had been predicted. Nehemiah was not convinced by the long argument, and did not conceal the fact. On this account, the fanatical Sabbatians are said to have secretly made signs to one another to do away with this dangerous Pole. He fortunately escaped from the castle, betook himself forthwith to Adrianople, to the Kaimakam Mustapha, became a Mahometan, and betrayed the fantastic and treasonable designs which Sabbataï Zevi cherished, and which, he said, had remained unknown to the government, only because the overseer of the castle of Dardanelles had an interest in the concourse of Jews.

The Kaimakam conveyed the intelligence to the sultan, Mahomet IV, and the course to be pursued with regard to Sabbataï was maturely considered, the mufti Vanni being also admitted to aid the deliberations. To make short work with the rebellious schemer appeared impracticable to the council, particularly as Mahometans also followed him. If he should fall as a martyr, a new sect might arise, which would kindle fresh disturbances. Vanni, a proselytizing priest, proposed that an attempt be made to bring Sabbataï over to Islam. This advice was followed, and the sultan's physician (Hakim Bashi), a Jewish renegade, by name Guidon, was employed as the medium. A messenger suddenly appeared at Abydos, drove away the Jews, who were besieging the Messiah with homage, conveyed him to Adrianople, and brought him first to the Hakim Bashi, who, as a former co-religionist, would be able to convert him the more easily. The physician represented to him the dreadful punishment that would inevitably befall him—he would be bound, and scourged through the streets with burning torches, if he did not appease the wrath of the sultan by adopting Islamism. It is not known whether this call to apostatize from Judaism cost the conceited Messiah great mental conflict. He had not much manly courage, and Judaism, in its existing form, was perhaps dead for him. So he adopted Guidon's advice. The following day (Elul 13, September 14, 1666) he was brought before the sultan. He immediately cast off his Jewish head-dress, in sign of contempt; a page offered him a white Turkish turban and a green instead of the black mantle which he wore, and so his conversion to the Mahometan religion was accomplished. When his dress was changed, it is said that several pounds of biscuit were found in his loose trousers. The sultan was highly pleased at this termination of the movement, gave him the name of Mehmed Effendi, and appointed him his door-keeper—Capigi Bashi Otorak—with a considerable monthly salary; he was to remain near the sultan. The Messiah's wife, Sarah, the Polish rabbi's fair daughter of loose behavior, likewise became a Mahometan, under the name of Fauma Kadin, and received rich presents from the sultana. Some of Sabbataï's followers also went over to Islam. The mufti Vanni instructed them in the Mahometan religion. Sabbataï is said to have married a Mahometan slave, in addition to his wife Sarah, at the command of the mufti. Nehemiah Cohen, who had brought about this sudden change, did not remain in Turkey, but returned to Poland, took off the turban, and lived quietly without breathing a word of what had happened. He disappeared as suddenly as he had come forward. The ex-Messiah impudently wrote, some days after his conversion, to his brothers at Smyrna: "God has made me an Ishmaelite; He commanded, and it was done. The ninth day of my regeneration." Nearly at the same time the rabbis and presidents of schools at Amsterdam assembled, and sent a letter of homage to Sabbataï Zevi, to testify their belief in and submission to him. The semi-Spinozist Dionysius (Benjamin) Musaphia, vexed at not being invited, wrote a separate letter to Sabbataï Zevi, signed by himself and two members of the school (Elul 24th). A week later, twenty-four distinguished men of Amsterdam sent another letter of homage to the apostate Messiah. At their head was Abraham Gideon Abudiente. Did these letters reach the Mahometan Mehmed Effendi? At Hamburg, where likewise his conversion was not suspected, the blessing was five times pronounced over the renegade Sabbataï, on the Day of Atonement (October 9, 1666).

But when the rumor of his apostasy went the rounds of the communities, and could no longer be denied, confidence was succeeded by a bewildering sense of disenchantment and shame. The highest representative of Judaism had abandoned and betrayed it! Chayim Benvenisti, the rabbi of Smyrna, who had invested the false Messiah with authority from motives far from honorable, almost died of shame. Mahometans and Christians pointed with scorn at the blind, credulous Jews. The street boys in Turkey openly jeered at Jewish passers-by. But this ridicule was not all. So widespread a commotion could not die out and leave no trace. The sultan thought of destroying all the Jews in his empire, because they had formed rebellious plans, and of ordering all children under seven to be brought up in Islamism. The newly converted Mahometan, Mehmed Effendi, in order to revenge himself, is said to have betrayed his own plans, and the consent of the Jews thereto. Two councilors and the sultana-mother are reported to have dissuaded the sultan from his design by the observation that the Jews ought to be regarded as having been misled. Fifty chief rabbis, however, because they had neglected their duty in teaching the people, were to be executed—twelve from Constantinople, twelve from Smyrna, and the remaining twenty-six from the other communities in Turkey. It was regarded as a special miracle that this resolution remained a dead letter, and that the Jews did not even have to pay a fine. The division in the communities might have had even worse consequences, if the unbelievers had heaped scorn and mockery upon the late devotees. But the colleges of rabbis in the East interposed, and sought to appease and reconcile, and threatened to excommunicate any one who, by word or deed, offended a former Sabbatian.

Although men's minds were calmed for the moment, it was long before peace was restored. After the first surprise at Sabbataï's conversion was over, his zealous followers, especially at Smyrna, began to recover. They could not persuade themselves that they had really been running after a shadow. There must be, or have been, some truth in Sabbataï's Messianic claims, since all signs so entirely agreed. The Kabbalists easily got over objections. Sabbataï had not turned Mahometan; a phantom had played that part, while he himself had retired to heaven or to the Ten Tribes, and would soon appear again to accomplish the work of redemption. As at the time of the origin of Christianity mystical believers (Docetæ) interpreted the crucifixion of Jesus as a phantasm, so now thorough-going mystics explained Sabbataï's apostasy from Judaism. Others, such as Samuel Primo, Jacob Faliachi, Jacob Israel Duchan, who had designed, through him, to bring about the fall of Rabbinical Judaism, and would not abandon their plan lightly, still clung to him. The prophets, who had been manifestly proved false through his conversion, were most interested in remaining true to him. They did not care quietly to renounce their functions and withdraw into obscurity, or be laughed at. The prophets residing at Smyrna, Constantinople, Rhodes, and Chios were silenced; but the itinerant prophets, Nathan Ghazati and Sabbataï Raphael, did not choose to abdicate. The former had remained in Palestine during Sabbataï's triumph in order to be paid homage on his own account. After the deception was unmasked he regarded himself as no longer safe; he made preparations to go to Smyrna, and continued to send out his mystical, bombastic letters. From Damascus he warned the Jews of Aleppo by letter not to allow themselves to be discouraged by strange circumstances in their belief in the Messiah; there was a deep mystery shortly to be revealed; but wherein the mystery consisted could not yet be disclosed. By these circulars the credulous were confirmed afresh in their delusion. In Smyrna many synagogues continued to insert the blessing for Sabbataï in their prayers. Hence the rabbis were obliged to interfere vigorously, especially the rabbinate of the Turkish capital. They laid under a ban all who should even pronounce the name of Sabbataï, or converse with his followers, and threatened to hand them over to the secular arm. Nathan Ghazati, in particular, was excommunicated, and everyone warned against harboring him or approaching him (Kislev 12, December 9, 1666). These sentences of excommunication were so far effectual that Nathan could not stay anywhere for any length of time, and even in Smyrna he could remain only a short time in secret at the house of a believer. But the rabbis were not able entirely to exorcise the imposture. One of the most zealous Sabbatians, probably Samuel Primo, who was ready in invention, threw out a more effective suggestion than that of the mock conversion. All had been ordained as it had come to pass. Precisely by his going over to Islam had Sabbataï proved himself the Messiah. It was a Kabbalistic mystery which some writings had announced beforehand. As the first redeemer Moses was obliged to reside for some time at Pharaoh's court, not as an Israelite, but to all appearance an Egyptian, even so must the last redeemer live some time at a heathen court, apparently a heathen, "outwardly sinful, but inwardly pure." It was Sabbataï's task to free the lost emanations of the soul, which pervade even Mahometans, and by identifying them with himself, as it were, bring them back to the fountain-head. By redeeming souls in all circles, he was most effectually furthering the kingdom of the Messiah. This suggestion was a lucky hit; it kindled anew the flame of the imposture. It became a watchword for all Sabbatians enabling them, with decency and a show of reason, to profess themselves believers, and hold together.