The Azuchi Debate: Nobunaga’s Rigged Trial and the Golden Age of Christian Japan

Chapter One

A Street Fight in the Shadow of a Castle

In June 1579, in the meticulously planned castle town that Oda Nobunaga was building at the foot of Mount Azuchi on the shores of Lake Biwa, just outside the capital Kyoto, two Nichiren Buddhist laymen got into a screaming match with a Pure Land preacher on a public street.

The argument was theological. The Nichiren school of Buddhism had a proselytising technique called shakubuku, literally, “break and subdue”, which involved confronting adherents of rival Buddhist schools and, through a volatile mixture of scriptural citation and personal abuse, demonstrating that their beliefs were not merely wrong but cosmically dangerous. Shakubuku encounters had a tendency to escalate. In the fractured religious landscape of sixteenth-century Japan, where the line between theological dispute and armed insurrection was alarmingly thin, most regional lords had banned such debates entirely. The daimyō understood, even if the monks did not, that a quarrel about the Lotus Sutra had a way of ending with burning buildings.

The two laymen, Ōwaki Densuke and Takebe Shōchi, did not appear to have been told. They accosted a preacher named Reiyo Gyokunen, a Jōdo (Pure Land) Buddhist whom Nobunaga had specifically invited to Azuchi, and set about demolishing his theology in public. Reiyo, who was connected to the temples Nobunaga was patronising in his new capital, took exception. The confrontation drew a crowd. The crowd took sides. By the time word reached the castle, a street-corner argument had become a public order problem. And public order problems were not tolerated.

The news climbed the slope of Mount Azuchi and reached the ears of the man at the top, a man who had spent the past decade systematically destroying every religious institution in central Japan that had dared to challenge his authority. Nobunaga listened. And then he did something that looked, on the surface, remarkably restrained.

He ordered a debate.

Chapter Two

The Warlord and His Monks

To understand what happened next, you need to understand what Nobunaga had been doing to organised Buddhism for the previous eleven years, and why the Nichiren sect, in particular, had walked into a trap with the eagerness of men who did not know the jaws were already closing.

Oda Nobunaga’s relationship with Japanese Buddhism was, by 1579, best described as adversarial. He had not always been an enemy of the faith in the abstract; he was simply, and categorically, an enemy of any institution that possessed independent military power and the willingness to use it. In sixteenth-century Japan, that described a substantial portion of the Buddhist establishment.

The worst offenders, from Nobunaga’s perspective, were the Ikkō-ikki, the armed religious leagues of the True Pure Land school, centred at the fortress-monastery of Honganji in Osaka. The Ikkō-ikki had been waging what amounted to a religious civil war against secular authority for decades. They fielded armies. They controlled provinces. Their leader, the abbot Kennyo, had rallied a coalition against Nobunaga in 1570 that would take a full decade to break. The Ikkō-ikki war was the longest and most gruelling military campaign of Nobunaga’s career, and it was still grinding on when the street quarrel erupted in Azuchi.

Nobunaga had already demonstrated what happened to militant Buddhism that resisted him. In September 1571, his forces had ascended Mount Hiei and burned the Enryakuji monastery complex, one of the most ancient and sacred Buddhist sites in Japan, to the ground. The warrior-monks inside were killed. The buildings, the libraries, the treasures accumulated over seven centuries of imperial patronage, all of it went up in smoke. The destruction of Enryakuji horrified the Japanese establishment in the way that a cathedral burning might horrify medieval Christendom, which was precisely the point. Nobunaga was not making a theological argument. He was making a political one: no religious institution was beyond the reach of secular power.

And now, eight years later, the Nichiren sect had picked a fight in his personal capital.

The Nichiren school occupied an interesting position in the religious landscape. Like the Ikkō-ikki, they were militant and expansionist. Their shakubuku method of aggressive confrontation made them natural provocateurs. Unlike the Ikkō-ikki, they did not field armies, their militancy was social and rhetorical rather than military. They stirred up riots, initiated public debates, slandered rival faiths, and generally made themselves intolerable to anyone who valued tranquillity.

They were also, and this would prove to be of considerable interest to certain Portuguese observers, the most ferocious Buddhist opponents of Christianity in Japan. Nichiren preachers had led the campaign to expel the Jesuit missionary Gaspar Vilela from Kyoto in the early 1560s, petitioning the warlord Matsunaga Hisahide, himself a Nichiren adherent, to have the foreign priest removed. Matsunaga’s retainers had suggested an even simpler solution: investigate the new doctrine, and if it was seditious, cut off the missionaries’ heads. Vilela escaped to Sakai. The Nichiren monks considered this a partial victory.

Nobunaga, who was in 1579 on the verge of launching his final campaign against the Ikkō-ikki, saw the street quarrel in Azuchi for what it was: an opportunity to eliminate another potential source of religious militancy before it could metastasize into the kind of theocratic challenge he had spent the past decade destroying. He had no interest in which school of Buddhism was doctrinally correct. He had an intense interest in which school of Buddhism was going to cause him problems.

The debate was the instrument. The verdict was predetermined.

Chapter Three

The Trial at Jōgon’in

The formal disputation was held at the Jōgon’in temple in Azuchi. Nobunaga appointed judges. The judges received their instructions in advance. The proceedings would later be characterised by historians as a “farce”, a “monkey play”, and a “calculated trap”, descriptions that, while colourful, somewhat understate the degree to which the entire exercise was a piece of political theatre staged for a predetermined outcome.

The Nichiren faction, apparently unaware that the script had already been written, arrived in force. Their delegation represented the major Nichiren temples of the capital region, Chōmyōji, Jōkōin, Kuon’in, Myōkokuji, Daizōbō, and included a popular preacher named Fuden who had built a considerable following through exactly the kind of aggressive, inflammatory sermons that had made the sect a public nuisance. The Nichiren delegation came to win, which was the first sign that they had fundamentally misread the situation.

The Pure Land side, by contrast, sent two men. Reiyo Gyokunen, whose public humiliation by the two Nichiren laymen had started the whole affair, was present. But the real combatant was Teian, a local Azuchi priest with a gift for verbal combat, wearing simple ink-black robes that contrasted sharply with the Nichiren delegation’s formal vestments. The asymmetry was itself a message, though the Nichiren priests appear not to have read it.

Teian opened the proceedings by asking the Nichiren representatives a direct question: did the eight scrolls of the Lotus Sutra, the scripture upon which the Nichiren school’s entire theological edifice rested, contain the invocation of Amida Buddha? It was a trap inside a trap: a doctrinal question designed to produce an answer that would embarrass the Nichiren regardless of how they responded, put to them by a priest who already knew how the judges would rule.

The historical accounts of the exact exchange vary, Jesuit sources, Japanese chronicles, and later Buddhist historiography each preserve different versions of who said what to whom. What none of them dispute is the speed with which the proceedings collapsed. After only a few exchanges, the pre-instructed judges declared the Jōdo school the absolute victors.

Pandemonium followed. Spectators surged forward. Copies of the Lotus Sutra were snatched from the hands of the Nichiren priests and torn to shreds, an act of scriptural desecration that, in any other context, would have constituted a serious religious crime. The Nichiren delegation attempted to flee the temple, which was the moment they discovered that Nobunaga’s troops had sealed the gates. They were not going anywhere until the lord of Azuchi had finished with them.

Chapter Four

Blood on the Temple Floor

Nobunaga had deliberately absented himself from the debate. He did not attend the proceedings, did not preside over the arguments, and did not witness the verdict. He had set the mechanism in motion and then retired to his castle at the top of the hill, letting events unfold according to the script he had written. It was only after the verdict had been delivered and the gates sealed that he descended from Azuchi Castle to the Jōgon’in to distribute rewards and punishments.

The rewards were perfunctory. The Jōdo priests received praise for their theological triumph, a triumph that had, in fairness, required no particular theological skill, given that the outcome was settled before the first question was asked.

The punishments were not perfunctory.

Nobunaga sentenced the two laymen who had started the street quarrel, Ōwaki Densuke and Takebe Shōchi, to death. The charge was not heresy, Nobunaga did not deal in heresy; he had no use for theological categories, but public disorder. They had caused a disturbance in his castle town. They had disrupted the peace of a domain where the peace was personally guaranteed by the most dangerous man in Japan. They had their heads cut off.

The priest Fuden presented a more interesting case. Fuden had, with what turned out to be fatal cleverness, kept his mouth shut during the actual debate. He had let others do the talking. He had not directly participated in the exchanges that the judges had declared a loss. By the strict logic of the proceedings, he had done nothing wrong.

Nobunaga did not operate by strict logic. He condemned Fuden to decapitation on the grounds of cowardice, accusing the popular preacher of being a “sneak” who stirred up trouble behind the scenes but lacked the courage to defend his convictions in the open. The accusation was almost certainly accurate. Fuden was known as an intolerant, trouble-making preacher who specialised in slandering other religions, including, pointedly, Christianity, and secretly promoting the kind of disruptive public debates that had led to the current situation. Nobunaga killed him not for what he had said at Jōgon’in, but for everything he had said and done before it.

Three men dead. But the finale was still to come.

The surviving thirteen Nichiren dignitaries, senior priests representing some of the most important temples in the region, were assembled before Nobunaga and presented with a three-item oath. They were required to acknowledge their total defeat in the debate. They were required to accept the justice of the executions. And they were required to swear, permanently and irrevocably, that their sect would cease slandering other religions and cease provoking public religious debates.

They signed the oath in their own blood.

Thirteen men, their fingers pricked, pressing their names into a document that amounted to an unconditional surrender of the Nichiren sect’s most fundamental practices, the aggressive proselytisation, the public confrontations, the rhetorical warfare against rival faiths that defined shakubuku and gave the school its identity. Nobunaga had not merely won a debate. He had forced the Nichiren to sign away the right to be the Nichiren.

The message radiated outward from Azuchi with the force of a shockwave: the religious institutions of Japan existed at the pleasure of Oda Nobunaga. Their doctrines, their practices, their very right to speak in public was contingent on his approval. The burning of Enryakuji had demonstrated that he would destroy those who resisted with military force. The Azuchi debate demonstrated that he could also destroy them with a tribunal.

Chapter Five

The Jesuits in the Wings

A group of Portuguese and Italian priests watched the destruction of their most determined enemy and could barely contain their satisfaction.

The Jesuit missionaries had not participated in the Azuchi debate. They had not been invited, consulted, or formally acknowledged in any way. Nobunaga’s objectives were entirely secular, the subordination of religious institutions to political authority, and the Jesuits were not, in his calculus, a factor in the proceedings. But the consequences of the debate for the Christian mission were, by any measure, transformative.

The Nichiren sect had been the single most aggressive domestic opponent of the Jesuits in Japan. Nichiren preachers had led the campaigns to expel Christian missionaries from the capital. They had petitioned warlords for the padres’ removal. They had used shakubuku to confront and harass Christian converts. They had instigated riots in cities where the Jesuits were attempting to establish churches. The blood oath signed at Azuchi, the permanent prohibition on slandering other religions, did not mention Christianity by name, but it did not need to. The Nichiren monks understood perfectly well that their most enthusiastically pursued target was now off limits.

A lesson could have been learned by the Jesuits. You do not cross Japanese rulers. You do not violate public order.