Fire as Purification - Fire-Striking in Japanese Buddhist Ceremony: Sources, Method, and Meaning

I. The Term and Its Literal Meaning

The Japanese term is kiribi (切り火), written with the characters for "cut" and "fire" — more precisely rendered as "cutting fire" or "striking fire." It refers both to the act of striking sparks from flint and steel and to the ritual ceremony in which that act is performed. Standard Japanese dictionaries define it as a Shinto fire-purification ceremony, and the term appears consistently across Buddhist liturgical manuals, folk practice records, and scholarly treatments of Japanese purification ritual.

II. Roots: Before Buddhism

The kiribi ritual is older than Japanese Buddhism itself. One of its earliest recorded appearances is in the Nihon Shoki (720 CE), where Prince Yamatotakeru's aunt presents him with a flint pouch before a perilous mission, and the sparks save his life. This establishes the deepest cultural layer of the practice: kiribi as protective fire, a shield against harm at a threshold moment. The gesture performed at a memorial ceremony is, at its oldest stratum, a threshold rite — sending someone safely across a boundary.

In Shinto, fire sits alongside water and salt as one of the three principal purificatory agents. The broader Shinto concept is harae (禅) — ritual purification to remove kegare (pollution or defilement), including bad luck, disease, and spiritual impurity. Harae is performed before worship or any sacred act, and its mythological origin is traced to the god Izanagi washing himself after his journey to the land of the dead. Kiribi is one expression of this ancient purificatory impulse, though its transmission into everyday and Buddhist practice came largely through a specific intermediary.

III. The Yamabushi Transmission

Scholar Hideki Sekine, author of several books on the history of fire and a lecturer at Wako University, states that "the idea of purifying something with sparks probably spread from the yamabushi (mountain ascetic hermits) to the common people, and mixed with other beliefs." The yamabushi are practitioners of mountain asceticism with deep roots in pre-Buddhist Japanese religious practice. They are the crucial transmission channel through which sacred fire practices moved from monastic and mountain contexts into lived ceremonial life, including memorial and protective rites.

The folk dimension of this transmission is well documented. Kiribi was struck over the backs of people departing on journeys for protection and safe return. Merchants at Shibamata Taishakuten in Tokyo still perform kiribi every morning to ensure prosperity. The gesture carries the same essential meaning across all these contexts: it clears impurity, marks a sacred threshold, and invokes the protective power of fire at a moment of transition.

IV. Shingon Buddhism: Fire as the Wisdom of the Cosmic Buddha

The great esoteric Buddhist fire ritual is the goma (護摩), derived from the Sanskrit homa, which itself descends from Vedic fire sacrifice. The goma ceremony is believed to have evolved from the Vedic Agnicayana fire altar ritual, entering the Buddhist esoteric stream in India before transmission through China to Japan.

In Shingon, the meaning of sacred fire is precisely defined. The consecrated fire is understood as the purifying wisdom of the Buddha, and the ritual is performed for the purpose of destroying detrimental thoughts and desires. The central deity invoked is Acala (Fudo Myo-o, 不動明王), the "Immovable One," depicted wreathed in flames that represent the Buddha's wisdom incinerating the root causes of suffering. Fudo Myo-o is a manifestation of Dainichi Nyorai, the Cosmic Buddha, the principal deity of esoteric Buddhism. When fire is struck or ignited in Shingon ceremonies, it is not merely symbolic hygiene — it is an invocation of the primordial intelligence underlying all phenomena.

Shingon holds that enlightenment is not a distant reality requiring countless lifetimes but a genuine possibility within this very life. Fire is the transformative agent through which that possibility is realized: it burns away the obscurations that conceal the inherent Buddhahood already present in the practitioner. The goma is, in this sense, a ritualized enactment of awakening itself.

V. Tendai Buddhism: The Same Flame, a Parallel Lineage

Both Tendai and Shingon practice the goma, with their traditions dating back more than 1,200 years to their founding in Japan. The two lineages share a common origin in China: both Kukai (founder of Shingon) and Saicho (founder of Japanese Tendai) received esoteric transmission from the Chinese master Huiguo, though they developed independently thereafter. Venerable Ennin later incorporated additional esoteric transmissions into the Tendai school during his own study in China.

Fudo Myo-o is venerated in both Shingon and Tendai, as well as in Shugendo, Zen, and Nichiren. In all these streams, the fire ceremony's purpose remains the same: the burning away of ignorance, worldly desires, and the obscurations that prevent the recognition of one's inherent Buddha-nature.

Within certain Shugendo texts, the goma is described as having an internalized dimension in which "the fire inside the body is the offering that burns the passions for the achievement of enlightenment." Three modes of inner fire are distinguished: one in which the thirty-seven Buddhas reside in the heart where fire burns continuously, fueled by thoughts; a second in which the practitioner's own breathing becomes the smoke venting and the bodily organs become brazier, fuel, and flame; and a third linked to contemplative alchemy. The outer ritual of striking flint is, in this understanding, a visible gesture pointing to an inward reality that is always already present.

VI. Nichiren's Position and the Kiribi in His Context

Nichiren was deeply formed by esoteric transmission, receiving initiation in at least two esoteric lineages, and his Three Great Secret Laws are themselves an esoteric hermeneutic of the Lotus Sutra. His critique was not of esotericism as a category but of esoteric practice that elevated Dainichi Nyorai above Shakyamuni Buddha and thereby displaced the Lotus Sutra from its supreme position. The target was misaligned esotericism, not esotericism itself.

This places the kiribi in Nichiren ceremonial practice in a fuller light. It is not a residual folk gesture that survived despite his doctrine, but a practice naturally continuous with his own esoteric understanding of the Lotus Sutra as the ground of all Buddhist meaning, including fire symbolism.

The Shutei Hoyo Shiki records the kiribi gesture consistently across multiple ceremony types: the Eye-Opening Ceremony (Kaigen-shiki), the Relocation Procedure (Hokken Saho), the Ground-Breaking Ceremony, and the Purifying Cremation Ceremony (Jobon-shiki). In each case, sparks are struck three times to the left, right, and center toward the object being consecrated or the space being prepared. The act precedes all other ritual elements — it is the first gesture, clearing the ground before anything else begins.

Nichiren's own Gosho writings, quoted within the Hoyo Shiki, provide the doctrinal grounding for the symbolism in specifically Lotus Sutra terms. In one passage he writes: "The Buddha also stays in our minds. It is like the fire that exists within a flint and the fortune that can be found within a gem. We ordinary people cannot see our own eyelashes, which are too close, or the end of the sky, which is too far. Likewise, we are unaware of the Buddha residing in our own minds."

In this light, the teaching that the Buddha resides within the ordinary mind "like fire within flint" is not folk analogy but esoteric doctrine: an expression of the inherent Buddha-nature teaching of the Lotus Sutra itself, in which every sentient being already contains the seed of full awakening, requiring only the right conditions to manifest. Striking the flint is the ritual enactment of that teaching — the moment when what is latent is called into visibility.

A second Gosho passage in the same text uses the flint as a metaphor for perseverance in practice: "It is like adding cold water into a kettle of boiling water and ceasing to strike flints before starting a fire. We shall never have hot water or get the fire started." This compounds the meaning: the kiribi gesture is not only a purification rite and a Buddha-nature symbol — it is also a teaching about the necessity of sustained practice, of not stopping before the fire is made.

VII. One Further Thread: Zoroastrian Fire

Hideki Sekine's research notes that fire's association with purity is "a belief that originated in Zoroastrianism and was assimilated into Buddhism, which spread to Japan in the 8th century." The purity of fire in Persian religion — its status as the sacred medium between the human and the divine, maintained in eternal temple flames — entered the Indian Vedic stream through cross-cultural contact in the ancient world. From there it passed into the Buddhist esoteric stream, and arrived in Japan layered with centuries of accumulated meaning.

The flint struck at a Nichiren Buddhist memorial ceremony thus carries a symbolic history that crosses Zoroastrian, Vedic, Indian Buddhist, Chinese Buddhist, Shinto, yamabushi, Shingon, Tendai, and Nichiren streams. None of these layers cancels the others. They have accumulated into a single gesture.

VIII. Summary: What the Gesture Says

The kiribi belongs to one of the oldest and most widely shared religious intuitions in the Japanese spiritual world: that fire, uniquely among the elements, does not merely cleanse — it transforms. It destroys what is impure and releases what is essential.

In the specific context of a Nichiren memorial, striking the flint at the beginning of the ceremony speaks, in a language older than words, across several registers simultaneously. The defilement of death and grief is cleared; the space is made sacred; the threshold is marked. And what is essential in the one who has died — the Buddha-nature, the fire within the stone — is not destroyed. It is released.

The three strikes to the left, right, and center are not arbitrary. They cover the full compass of the ritual space, ensuring that nothing within it remains unaddressed by the purifying spark. The triple movement echoes the triple structure of Buddhist practice itself: the three jewels, the three bodies of the Buddha, the three karmas of body, speech, and mind.

And then the Odaimoku begins — the living fire continuing what the struck spark initiated.

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Appendix: Gosho Passages on Fire, Flint, and Stone

1. New Year's Gosho (Reply to the Wife of Omosu)

January 5th, Minobu. Recipient: Myoichi-nyo (wife of Omosu). (Writings of Nichiren Shonin, vol. 7, ed. Hori Kyotsu, University of Hawaii Press).

"The Buddha also stays in our minds. It is like the fire that exists within a flint and the fortune that can be found within a gem. We ordinary people cannot see our own eyelashes, which are too close, or the end of the sky, which is too far. Likewise, we are unaware of the Buddha residing in our own minds."

2. Shuju Onfurumai Gosho (The Vanguard

Attributed to Nichiren Shonin at age 61. Listed in the Rokuge. No extant original copy. Writings of Nichiren Shonin (WNS).

"It is like adding cold water into a kettle of boiling water and ceasing to strike flints before starting a fire. We shall never have hot water or get the fire started."

3. Earthly Desires Are Enlightenment

Source: The Writings of Nichiren Daishonin, vol. 1, p. 319 (SGI/WND translation).

Written to Shijo Kingo.

"Carry through with your faith in the Lotus Sutra. You cannot strike fire from flint if you stop halfway. Bring forth the great power of faith."

4. On Rebuking Slander of the Law and Eradicating Sins

Source: The Writings of Nichiren Daishonin, vol. 1, p. 444 (SGI/WND translation). Written from Sado Island, 1273, to Shijo Kingo.

"I am praying that, no matter how troubled the times may become, the Lotus Sutra and the ten demon daughters will protect all of you, praying as earnestly as though to produce fire from damp wood, or to obtain water from parched ground."

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Primary Sources Consulted

Shutei Nichiren Shu Hoyo Shiki. First edition, 2013. Nichiren Buddhist International Center, Hayward, California.

Hori, Kyotsu, ed. Writings of Nichiren Shonin. 7 vols. Honolulu: University of Hawaii Press, 2002–2010. (WNS)

The Writings of Nichiren Daishonin. 2 vols. Tokyo: Soka Gakkai, 1999–2006. (WND)

Sekine, Hideki. Quoted in The Japan Times, "Kiribi," December 16, 2010.

Nihongomaster.com, entry for kiribi (切り火).

Shugendo.fr, "Ascetic Practice of Fire."

Wikipedia entries: "Shingon Buddhism," "Shuni-e," "Harae."

Japan Tourism Agency, "Goma Fire Ritual."