We must not leave unmentioned a personage celebrated at that time perhaps beyond his deserts, Jacob Jehuda Leon (Templo, 1603–1671). If not a Marrano, he was of Marrano descent, and resided first at Middelburg, then at Amsterdam, and was more an artist than a man of science. Leon devoted himself to the reproduction of the first Temple and its vessels, as they are described in the Bible and the Talmud. He executed a model of the Temple on a reduced scale (3 yards square, 1½ in height), and added a concise, clear description in Spanish and Hebrew. Work of so unusual a character attracted extraordinary notice at a time when every kind of antiquarian learning, especially biblical, was highly prized. The government of Holland and Zealand gave the author the copyright privilege. Duke August of Brunswick, and his wife Elizabeth, wished to possess a German translation of Leon's description, and commissioned Professor John Saubert, of Helmstädt, to undertake it. While corresponding with the author so as to ensure thoroughness, he was anticipated by another man who brought out a German translation at Hanover. This circumstance caused great annoyance to Professor Saubert. Templo, as Leon and his posterity were surnamed from his work in connection with the Temple, engaged in controversies with Christian ecclesiastics on Judaism and Christianity, and published a translation of the Psalms in Spanish.

In this cultivated circle of Spinoza's contemporaries were two men who lived alternately at Hamburg and Amsterdam, David Coen de Lara and Dionysius Musaphia, both distinguished as philologists, but not for much besides. With their knowledge of Latin and Greek they explained the dialect of the Talmud, and corrected errors which had crept into the earlier Talmudical lexicons. David de Lara (1610–1674) was also a preacher and writer on morals; but his efforts in that direction are of small value. He associated too much with the Hamburg preacher, Esdras Edzardus, who was bent on the conversion of the Jews. The latter spread the false report that De Lara was almost a Christian before he died. Dionysius (Benjamin) Musaphia (born about 1616, died at Amsterdam, 1676), a physician and student of natural science, was up to the date of the monarch's death in the service of the Danish king Christian IV. He was also a philosopher, and allowed himself to question various things in the Talmud and the Bible. Nevertheless he held the office of rabbi at Amsterdam in his old age.

Much more important than the whole of this circle was Balthasar Orobio de Castro (1620–1687). He also sprang from Marrano parents, who secretly continued to cling to Judaism, in that they abstained from food and drink on the Day of Atonement. In this meager conception of Judaism, Orobio was brought up. Endowed with clear intellect, he studied the decayed and antiquated philosophy still taught in Spanish academies, and became professor of metaphysics in the University of Salamanca. This fossilized philosophy appears neither to have satisfied him nor to have brought him sufficient means of subsistence, for he applied himself in riper years to the study of medicine. In this pursuit Orobio was more successful; he gained a reputation at Seville, was physician to the duke of Medina-Celi, and to a family in high favor with the court, and amassed considerable wealth. He was a happy husband and father, when the Inquisition cast its baleful glance upon him. A servant, whom he had punished for theft, had informed against him. Orobio was seized, accused of Judaism, and thrown into a narrow, gloomy dungeon, where he had not room to move, and where he spent three years (about 1655–1658).

At first he filled up his time with philosophical subtleties, as pursued at the Spanish universities. He undertook to defend a thesis, acting at the same time in imagination as the opponent, who interposes objections, and as the judge, who sums up and sifts the arguments. By degrees his mind grew so perplexed that he often asked himself, "Am I really Don Balthasar Orobio, who went about in the streets of Seville, and lived in comfort with his family?" His past seemed a dream, and he believed that he had been born in prison, and must die there. But the tribunal of the Inquisition brought a change into his empty dream-life. He was ushered into a dark vault, lighted only by a dull lamp. He could hardly distinguish the judge, the secretary, and the executioner, who were about to deal with his case. Having been again admonished to confess his heresy, and having again denied it, the hangman undressed him, bound him with cords, which were fastened to hooks in the wall, brought his body into a swinging movement between the ceiling and the floor, and drew the cords so tight, that the blood spurted from his nails. His feet, moreover, were strongly bound to a small ladder, the steps of which were studded with spikes. Whilst being tortured, he was frequently admonished to make confession, and was threatened, in case he persisted in denial, with the infliction of still more horrible pains, for which, though they caused his death, he would have to thank his own obstinacy, not the tribunal. However, he survived the torture, was taken back to prison to allow his wounds to heal, then condemned to wear the garb of shame (San Benito), and was finally banished from Spain. He betook himself to Toulouse, where he became professor of medicine in the university. Although respected in his new position, Orobio could not long endure the hypocrisy. He went to Amsterdam, publicly professed the Jewish religion, and assumed the name of Isaac (about 1666). No wonder that he became a bitter opponent of Christianity, which he had learnt to know thoroughly. He became an adherent of Judaism from conviction, proved himself a courageous and able champion of the religion of his fathers, and dealt such powerful blows to Christianity as few before him, so that a distinguished Protestant theologian (Van Limborch) felt compelled to reply to Orobio's attacks.

All these cultivated youths and men, the soldier-poets Enriquez Gomez, Nicholas de Oliver y Fullana, and Joseph Arias, and the writers Joseph Penso, Thomas de Pinedo, Jacob Leon, David de Lara, and Dionysius Musaphia, knew of Spinoza's attacks upon Judaism, and undoubtedly read his "Theologico-Political Treatise." Isaac Orobio associated with Spinoza. Yet the blows by which the latter strove to shake Judaism did not cause the former to waver in their convictions. This is the more remarkable, as simultaneously, from another side, Judaism was covered with shame, or, what comes to the same thing, its followers everywhere in the East and West, with few exceptions, became slaves to a delusion which exposed them to the ridicule of the world, and enveloped them for the first time in the darkness of the Middle Ages.

Without suspecting it, Spinoza possessed in the East an ally, diametrically his opposite, who labored to disintegrate Judaism, and succeeded in throwing the whole Jewish race into a turmoil, which long interfered with its progress. Sabbataï Zevi was at once Spinoza's opposite and his ally. He possessed many more admirers than the philosopher of Amsterdam, became for a space the idol of the Jewish race, and has secret adherents even to the present time. Sabbataï Zevi (born Ab 9, 1626, died 1676), of Smyrna, in Asia Minor, was of Spanish descent, and became the originator of a new Messianic frenzy, the founder of a new sect. He owed the attachment which he inspired even as a youth, not to his qualities of mind, but to his external appearance and attractive manner. He was tall, well formed, had fine dark hair, a fine beard, and a pleasant voice, which won hearts by speech and still more by song. But his mind was befogged by reason of the predominance of fancy; he had an enthusiastic temperament and an inclination to what was strange, especially to solitude. In boyhood Sabbataï Zevi avoided the company and games of playmates, sought solitary places, and what usually has charms for the young did not attract him. He was educated by the current method. In early youth he studied the Talmud in the school of the veteran Joseph Eskapha, a staunch Talmudist of Smyrna, but did not attain to great proficiency. The more was he attracted by the confused jumble of the Kabbala. Once introduced into the labyrinth of the Zohar, he felt himself at home therein, guided by Lurya's interpretation. Sabbataï Zevi shared the prevailing opinion that the Kabbala can be acquired only by means of asceticism. He mortified his body, and bathed very frequently in the sea, day and night, winter and summer. Perhaps it was from sea-bathing that his body derived the peculiar fragrance which his worshipers strongly maintained that it possessed. In early manhood he presented a contrast to his companions because he felt no attraction to the female sex. According to custom Sabbataï Zevi married early, but avoided his young, good-looking wife so pertinaciously, that she applied for divorce, which he willingly granted her. The same thing happened with a second wife.

This aversion to marriage, rare in the warm climate of the East, his assiduous study of the Kabbala, and his ascetic life, attracted attention. Disciples sought him, and were introduced by him to the Kabbala. Twenty years old he was the master of a small circle. He attached disciples to himself partly by his earnest and retiring manner, which precluded familiarity, partly by his musical voice, with which he sang in Spanish the Kabbalistic verses composed by Lurya or himself. Another circumstance must be added. When Sultan Ibrahim ascended the throne, a violent war broke out between Turkey and Venice, which made the trade of the Levant unsafe in the capital. Several European, that is, Dutch and English, mercantile houses in consequence transferred their offices to Smyrna. This hitherto insignificant city thereby acquired importance as a mart. The Jews of Smyrna, who had been poor, profited by this commercial development, and amassed great riches, first as agents of large houses, afterwards as independent firms. Mordecai Zevi, Sabbataï's father, from the Morea, originally poor, became the Smyrna agent of an English house, executed its commissions with strict honesty, enjoyed the confidence of the principals, and became a wealthy man. His increasing prosperity was attributed by the blind father to the merit of his Kabbala-loving son, to whom he paid such great reverence, that it was communicated to strangers. Sabbataï was regarded as a young saint. The more discreet, on account of his folly, declared him to be mad. In the house of his English principal, Mordecai Zevi often heard the approach of the millennium discussed, either he himself or some of his people being enthusiastic believers in the apocalypse of the Fifth Monarchy. The year 1666 was designated by these enthusiasts as the Messianic year, which was to bring renewed splendor to the Jews and see their return to Jerusalem. The expectations heard in the English counting house were communicated by Mordecai Zevi to the members of his family, none of whom listened more attentively than Sabbataï, already entangled in the maze of the Luryan Kabbala, and inclined to mistake enthusiastic hopes for prosaic fact. What if he himself were called upon to usher in this time of redemption? Had he not, at an earlier age than any one before, penetrated to the heart of the Kabbala? And who could be more worthy of this call than one deeply immersed in its mysteries?

The central point of the later Kabbala was most intense expectation of the Messiah; Lurya, Vital, and their disciples and followers proclaimed anew, "The kingdom of heaven is at hand." A peculiar redemption was to precede and accompany it—the redemption of the scattered elements of the original soul (Nizuzoth) from the fetters of original evil, the demon nature (Kelifoth), which, taking a hold on men through the fall of the angels or divine elements, held them in captivity, impeded their upward flight, and necessitated the perpetual transmigration of souls from body to body. As soon as the evil spirit was either consumed, annihilated, rendered powerless, or at least existed by itself without admixture of the divine, then the Kabbalistic order (Olam ha-Tikkun) would prevail, streams of mercy would pour forth without let or hindrance upon the lower world through the channels of the Sefiroth, and fructify and miraculously quicken it. This work of redemption can be accomplished by every truly pious man (Zaddik), who having an enlightened soul, and being initiated into the Kabbala, stands in close union with the world of spirits, comprehends the connection between the upper and lower world, and fulfills all religious exercises (Kewanoth) with concentrated devotion and with due regard to their influence upon the higher powers. Still more effectually the Messiah, the son of David, will accomplish the annihilation of demoniacal powers and the restoration of lost souls, or rather the collection of the scattered elements of the universal soul of Adam. For to the Messiah, in whom dwells a pure, immaculate soul, are unfolded the mysterious depths of the higher worlds, essences, and divine creation, even the Divine Being Himself. The Messiah of the seed of David would, to a certain extent, be the original man (Adam Kadmon) incarnate, part of the Godhead.

This Luryan mysticism dazzled the bewildered brain of the Smyrna youth, and produced such confusion and giddiness, that he thought he could easily usher in this spiritual redemption, which would be immediately followed by that of the body. In what manner this haughty wish to play the part of a Messiah germinates and breaks forth in enthusiastic minds, is an impenetrable riddle. Sabbataï Zevi was not the first to believe himself able to reverse the whole order of the world, by mystical hocus-pocus, and partly to succeed in the endeavor. Certain it is that the extravagant notions entertained by Jews and Christians with regard to the near approach of the time of grace worked upon Sabbataï's weak brain. That book of falsehoods, the Zohar, declared that in the year of the world 5408 (1648) the era of redemption would dawn, and precisely in that year Sabbataï revealed himself to his train of youthful companions as the Messianic redeemer. It happened in an apparently insignificant manner, but the mode of revelation was of great import to the initiated. Sabbataï Zevi uttered the full four-lettered name of God in Hebrew (Jhwh, the Tetra-grammaton) without hesitation, although this was strictly prohibited in the Talmud and by the usage of ages. The Kabbalists attached all sorts of mystical importance to this prohibition. During the dispersion of Israel, the perfection of God Himself was to a certain extent destroyed, on account of the sinfulness of men and the degradation of the Jewish people, since the Deity could not carry out His moral plan. The higher and lower worlds were divided from each other by a deep gulf; the four letters of God's name were parted asunder. With the Messianic period of redemption the moral order of the world, as God had laid it down in the plan of the universe, and the perfection and unity of God would be restored. When Sabbataï Zevi permitted himself to pronounce the name of God in full, he thereby proclaimed that the time of grace had begun with him.

However, despite his pious, mystical life, he had too little authority at the age of two and twenty for the rabbis to allow an infraction of the existing order of things, which might lead to further inroads. When Zevi's pretensions became known some years later, the college of rabbis, at their head his teacher Joseph Eskapha, laid him and his followers under a ban. Many bickerings ensued in the community, the particulars of which are not known. Finally he and his disciples were banished from Smyrna (about 1651). The Messianic delusion appeared to have been extinguished, but it smouldered on, and broke out again, about fifteen years later, in a bright, consuming flame. This persecution, far from terrifying Sabbataï Zevi, gave him a sense of his dignity. The idea of a suffering Messiah had been transplanted from Christianity to Judaism; it was the accepted view that humiliation was the precursor of the Messiah's exaltation and glorification. Sabbataï believed in himself, and his disciples, amongst them Moses Pinheiro, a man of mature age, highly esteemed for scientific acquirements, shared the belief with tenacity. If the Messiah had been obliged to beg his way through the world, his illusion would not have long held its ground. But Sabbataï was richly provided with means, he could maintain his independence and his presumed dignity, and win adherents to his cause. At first, however, he kept himself in concealment, did not say much about his Messiahship, and thereby escaped ridicule. Whither he betook himself after his banishment from his native city is not quite certain; probably to the Turkish capital, where dwelt the largest Jewish community, in which were so many clean and unclean elements, that everyone could find companions for plans and adventures. Here he made the acquaintance of a preacher, Abraham Yachini, who confirmed him in his delusion. Yachini stood in high repute on account of his talent as a preacher. He was a needy and artful fellow, and made neat transcriptions for a Dutch Christian, who dabbled in Oriental literature. From selfish motives or delight in mystification, and to confirm Sabbataï Zevi in his delusion, Yachini palmed off upon him an apocryphal manuscript in archaic characters, which he alleged bore ancient testimony to Sabbataï's Messiahship.