The most shocking sentence in the Gospel of Mark is twelve words long. ‘There is nothing outside a person that by going into him can defile him’ (Mark 7:15). Biblical scholar William Barclay called it ‘well-nigh the most revolutionary passage in the New Testament.’ This assessment is correct — but the revolution it describes was not invented by Jesus. It had been articulated in Buddhist texts five centuries before Mark set down his account. What Jesus announced to a crowd of Galilean Jews who had never heard anything like it, the Buddha had said in the Sutta Nipata to his own followers who had been raised in a world saturated with ritual purity requirements.
To understand the full force of what Jesus was saying and why it was revolutionary in a Jewish context — and entirely natural in a Buddhist one — we must understand what Jewish purity meant, what Buddhist purity meant, and how completely incommensurable the two frameworks are.
7.1 Purity in Judaism: A Legal and Ritual Category
The Hebrew terms tumah and taharah — ritual impurity and purity — define a system that is, at its core, a legal and ritual framework. It governs access to sacred space, participation in Temple worship, and certain social interactions. It is triggered by specific, enumerable conditions: contact with a human corpse, contact with certain animals, bodily discharges including menstruation and seminal emission, skin diseases resembling leprosy, and various forms of contact with objects or persons already in a state of impurity.
The My Jewish Learning article on Jewish purity laws states clearly: ‘Although sometimes translated as unclean and clean this is not about dirt, and often it has no moral valence. Rather, the terms connote a sense of ritual fitness or unfitness for various purposes.’ This is the critical point. Tumah is not a moral category. A person who has contracted tumah through contact with a corpse — including a person performing an act of sacred obligation by burying the dead — is ritually impure but has committed no sin. Conversely, a morally corrupt person who has scrupulously avoided all sources of tumah is ritually pure. The two categories — moral and ritual — are separate systems that operate independently.
The Torah devotes an entire order of the Talmud — Seder Tohorot, the sixth and final order — to the laws of purity and impurity. The rules are extraordinarily complex. Impurity is transmissible through contact, through sharing a common surface, through being under the same roof as a corpse. There are four levels of derived impurity — rishon, sheni, shlishi, revi’i — each with different consequences for different categories of sacred food and space. The purification procedures are equally specific: immersion in a mikveh of sufficient size and proper water source, waiting for the prescribed number of days, bringing specified sacrifices in some cases. Every detail is legally defined.
Maimonides, in his codification of the laws of the mikveh, acknowledged the fundamental nature of this system when he wrote: ‘Uncleanness is not mud or filth which water can remove, but it is a matter of scriptural decree and dependent on the intention of the heart.’ His statement reveals the tension at the heart of Jewish purity law: the system is externally defined by contact with specific substances, yet Maimonides recognizes that its ultimate ground is spiritual. This tension is the opening that Jesus exploits — but he resolves it in a direction that is Buddhist, not Jewish.
The Pharisees who confronted Jesus in Mark 7 about his disciples eating with unwashed hands were not being petty legalists, as Christian commentary often portrays them. They were applying a recognized and elaborated tradition — the tradition of the elders — that extended biblical purity requirements into the domain of everyday life. The tradition they were applying had a long and legitimate history within Judaism. What Jesus was doing was not pointing out their hypocrisy within the system. He was rejecting the conceptual framework of the system entirely.
7.2 Jesus Abolishes the Framework: Mark 7:15
Mark 7:15 must be read in its full context to appreciate its radical scope. Jesus has been challenged about why his disciples eat without ritually washing their hands. He responds first by accusing the Pharisees of hypocritically honoring God with their lips while their hearts are far from him — he cites Isaiah 29:13 on lips versus heart. He then turns to the crowd and delivers the devastating sentence: ‘There is nothing outside a person that by going into him can defile him, but the things that come out of a person are what defile him.’
When the disciples later ask for clarification, Jesus elaborates in Mark 7:18-23: whatever enters a person goes into the stomach and passes out, not into the heart — Mark adds the parenthetical ‘thus he declared all foods clean.’ What comes out of a person — evil thoughts, sexual immorality, theft, murder, adultery, greed, wickedness, deceit, sensuality, envy, slander, pride, foolishness — these come from within, from the heart, and these are what defile a person.
This is not a reform of Jewish purity law. It is its complete conceptual abolition. Jesus is not saying that the Pharisees have miscalibrated the system. He is saying that the system is built on a false premise. The premise is that external things — food, substances, contacts — can defile a person in a spiritually significant sense. Jesus’s claim is that this premise is wrong. Nothing external defiles. Only what comes from within — the orientation and content of the mind — constitutes genuine defilement.
Commentators note that this statement ‘would have shocked his audience’ and ‘challenges centuries of Jewish traditions about purity.’ It challenges them not by offering a refinement but by dissolving the entire conceptual basis on which they rest. This is not what a Jewish teacher does. A Jewish teacher works within the system of the Torah, arguing about its application, extension, or proper interpretation. Jesus steps outside the system entirely and declares the operating principle false. That move has no precedent in Jewish tradition. It has a precise precedent in Buddhist tradition, where it is not a shocking innovation but the standard teaching.
7.3 Purity in Buddhism: Always and Only Inner
In Buddhism, purity is never an external condition. There is no Buddhist equivalent of tumah — no state of ritual unfitness triggered by contact with a specific substance or category of object. There are no Buddhist purity laws governing food, bodily discharges, contact with the dead, or proximity to specific individuals. The Buddhist concept of purity is entirely and exclusively a description of the state of the mind.
The Dhammapada: Purity Depends on Oneself
The Dhammapada states the Buddhist position with the categorical clarity that is its characteristic style. Chapter 12, verse 165: ‘By oneself is evil done; by oneself is one defiled. By oneself is evil left undone; by oneself is one made pure. Purity and impurity depend on oneself; no one can purify another.’ These four lines contain the entire Buddhist theory of purity. It is internal, self-generated, and dependent on one’s own actions of mind, speech, and body — not on what one has touched, eaten, or been proximate to.
“Purity and impurity depend on oneself; no one can purify another.” — Dhammapada 12.165
This verse, posted on the wall of the monastery where the translator Gil Fronsdal first encountered Buddhist practice, is described by teachers as among the most important statements in the entire canon. It is important precisely because it is absolute. No one can purify another. No external ritual — no immersion, no sacrifice, no priestly action — can produce purity in a person who has not produced it in themselves through the transformation of their own mind. The external ritual can point toward inner purity, but it cannot produce it.
The Sutta Nipata: Not by Water Is One Made Pure
The Sutta Nipata — one of the oldest texts in the Pali Canon — addresses the misconception that purity can come from outside in explicit terms. Sutta Nipata 242, the verse cited in the parallel table as matching Mark 7:15, states: ‘Not by water is one made pure. Many people bathe in rivers. In whom is truth and Dhamma, he is pure; he is a brahmin.’ The Sutta Nipata here is addressing the Hindu tradition of sacred river bathing — the very tradition that Buddhist ethics consistently critiques — but its principle applies equally to any system that locates purity in an external act. Purity is in the one who has truth and Dhamma within. It is not in the water.
The parallel with Mark 7:15 is exact. Mark’s Jesus says: nothing that goes into a person from outside can defile him. The Sutta Nipata says: not by water — not by any external substance — is one made pure. Both statements abolish the framework of external purity in a single move. Both locate the source of defilement and purity exclusively in the inner life of the person. Both make inner transformation — metanoia in Jesus’s vocabulary, Dhamma in the Buddha’s — the sole criterion of genuine purity.
[CHRISTIAN] “There is nothing outside a person that by going into him can defile him, but the things that come out of a person are what defile him.” (Mark 7:15)
[BUDDHIST] “Not by water is one made pure. Many people bathe in rivers. In whom is truth and Dhamma, he is pure.” (Sutta Nipata 242)
The Visuddhimagga: The Path of Purification
The systematization of Buddhist purity theology reaches its fullest expression in the Visuddhimagga — The Path of Purification — the great fifth-century CE commentarial treatise by Buddhaghosa. The title itself declares the theme: purification is a path, a sustained inner practice, not a condition achieved through external acts. The Visuddhimagga organizes the entire Buddhist path into three stages of purification: sila (ethical conduct), samadhi (meditation and concentration), and panna (wisdom and insight). Each stage produces a progressive purification of the mind — first the grosser defilements of action, then the subtler defilements of mental state, then the deepest roots of greed, hatred, and delusion.
This systematic three-stage purification through inner practice is the precise structural parallel to what Jesus proposes in Mark 7. Jesus does not offer a system — his is a teaching in single sentences for ordinary people — but his direction of movement is identical to the Visuddhimagga’s: away from external ritual toward inner transformation as the only genuine path to purity. The Catholic monk Thomas Merton, one of the most sophisticated Christian mystics of the twentieth century, recognized this structural identity explicitly, noting that the Buddhist path of purification and the Christian contemplative tradition were engaged in the same fundamental project of inner transformation that no external observance could substitute for.
7.4 What Defiles: The Parallel Sayings
The parallel between Jesus’s teaching on inner purity and Buddhist teaching extends from the general principle to the specific enumeration of what defiles. Jesus, when asked by his disciples to explain the parable of defilement, lists the sources of genuine defilement in Mark 7:21-23: ‘For from within, out of the heart of man, come evil thoughts, sexual immorality, theft, murder, adultery, coveting, wickedness, deceit, sensuality, envy, slander, pride, foolishness.’
This list is a Buddhist list. It is a catalogue of the mental defilements — kilesas — that the Buddhist path is designed to eliminate. The Buddhist Abhidhamma lists fourteen unwholesome mental factors: delusion, shamelessness, fearlessness of wrongdoing, restlessness, greed, wrong view, conceit, hatred, envy, avarice, worry, sloth, torpor, and doubt. Jesus’s list and the Buddhist list are not identical in their categories, but they share the essential structure: defilement is internal, it originates in the mind, and it manifests in speech and action from that internal source.
The Udanavarga — the Sanskrit parallel to the Dhammapada, cited in the parallel table as matching Matthew 15:19-20 — contains verse 33.13: ‘From within comes defilement, not from outside. Those who think the outer can defile the inner are confused about the Dharma.’ The verbal match with Matthew 15:19-20 — ‘these are what defile a person. But to eat with unwashed hands does not defile anyone’ — is striking. The same conceptual move, the same direction of correction, the same identification of the inner as the source of defilement and the outer as irrelevant to genuine purity.
[CHRISTIAN] “These are what defile a person. But to eat with unwashed hands does not defile anyone.” (Matthew 15:20)
[BUDDHIST] “From within comes defilement, not from outside. Those who think the outer can defile the inner are confused about the Dharma.” (Udanavarga 33.13)
7.5 The Jewish Context: Why This Was Revolutionary
To appreciate why Mark 7:15 shocked its original audience, one must appreciate what Jesus was doing to the system he was embedded in. He was not offering a more spiritual interpretation of ritual purity. He was not arguing, as the rabbis argued, about the proper application of purity laws in difficult cases. He was declaring the entire operating premise of the purity system false. His audience had organized significant portions of their daily life around the requirements of tumah and taharah. They had built ritual baths, avoided certain foods, separated themselves from certain people, and regulated their sexual lives according to a complex code designed to maintain ritual fitness for worship. Jesus said: none of that produces defilement or purity. What you do with your hands before eating is irrelevant. What is in your heart is what matters.
This is not a position derivable from any strand of Second Temple Jewish thought. The Pharisees were not wrong about Jewish law. They were right about Jewish law. The tradition of the elders they were applying was a legitimate extension of the Torah’s purity requirements. Jesus was not correcting their application of the law. He was rejecting the law’s conceptual framework in this domain.
No Jewish teacher before Jesus — not the Pharisees, not the Sadducees, not the Essenes, not the Zealots, not the authors of the Dead Sea Scrolls — taught that external conditions are irrelevant to purity. The Essenes, who are sometimes cited as a parallel to Jesus’s inner-purity teaching, were in fact more rigorous about external purity requirements than the Pharisees, not less. Their daily immersions and elaborate purity regulations went well beyond the Pharisaic tradition. The move Jesus makes in Mark 7:15 — from external to internal, from ritual to inner — has no Jewish precedent. It is, as Barclay says, revolutionary in a Jewish context. And it is entirely standard in a Buddhist one.
7.6 The Brahmin Critique: Buddhist Precedent for Jesus’s Challenge
The specific form of Jesus’s challenge to the Pharisees in Mark 7 — the critique of external ritual purity as spiritually vacuous — mirrors a recurring motif in Buddhist literature: the critique of Brahminic ritual purity requirements. The Buddha repeatedly challenged the Brahmin assumption that birth-status, ritual observance, and external purity constituted genuine spiritual attainment.
The Sutta Nipata contains multiple discourses in which the Buddha challenges Brahmin interlocutors on precisely this question. In the Vasetthas Sutta (Sutta Nipata 594-656), the Buddha argues against the notion that birth into the Brahmin caste makes one a Brahmin. True Brahmin-hood — genuine purity — comes from inner conduct, not from external status: ‘Not by birth does one become a Brahmin, not by birth does one become an outcast. By one’s actions one becomes a Brahmin; by one’s actions one becomes an outcast.’ This is Mark 7:15 in Pali.
The Pharisees in Mark 7 are playing a role structurally identical to the Brahmin interlocutors in the Sutta Nipata: they are defenders of an external ritual purity system who are challenged by a teacher who insists that true purity is internal. Jesus’s response to the Pharisees and the Buddha’s response to the Brahmins are structurally identical arguments deployed against structurally identical positions. The specifics differ — Jewish dietary law versus Hindu caste purity — but the logical structure, the direction of the critique, and the conclusion are the same. This is not coincidence. It is the same teaching in two different cultural contexts.
7.7 Matthew 5:8: The Pure in Heart
The Beatitude in Matthew 5:8 — ‘Blessed are the pure in heart, for they shall see God’ — is the positive statement of the same doctrine that Mark 7:15 states negatively. Purity in heart — not in hands, not in food, not in ritual — is the condition for the highest spiritual attainment: the vision of God.
The Buddhist parallel is in the Digha Nikaya (19.43): ‘The one who is pure in heart sees the Dhamma.’ The parallel is identified in the citation table. Both texts assert that inner purity — purity of mind and heart, not ritual condition — is the necessary and sufficient condition for the highest spiritual perception. In the Christian formulation, the pure in heart see God. In the Buddhist formulation, the pure in mind sees the Dhamma. Both formulations assert that the capacity for ultimate spiritual perception depends on inner purification, not on external ritual status. Both formulations are Buddhist in their logic. The Christian one is Buddhist in Jewish vocabulary.
[CHRISTIAN] “Blessed are the pure in heart, for they shall see God.” (Matthew 5:8)
[BUDDHIST] “The one who is pure in heart perceives the Dhamma, the ultimate truth.” (Digha Nikaya 19.43)
7.8 The Argument Stated
The argument of this chapter has four parts, following the standard structure of this essay.
First, the Jewish framework of ritual purity — tumah and taharah — is a legal category governing external ritual fitness. It operates independently of moral condition. A morally virtuous person can be ritually impure. A morally corrupt person can be ritually pure. The system is about external conditions, not inner transformation. No Jewish teacher before Jesus proposed that external conditions are irrelevant to genuine purity.
Second, the Buddhist framework of purity is entirely and exclusively inner. Dhammapada 12.165 states the principle absolutely: purity and impurity depend on oneself, no one can purify another. Sutta Nipata 242 states the corollary: not by water is one made pure. The Visuddhimagga systematizes the inner path of purification as the only genuine path. The Buddha’s critique of Brahminic external purity is structurally identical to Jesus’s critique of Pharisaic ritual purity.
Third, Buddhist purity theology predates the Gospels by five centuries. The Sutta Nipata is among the oldest texts in the Pali Canon. The Dhammapada was codified in the third century BCE. The Buddha’s critique of external ritual purity is not a late development. It is foundational.
Fourth, the transmission mechanism is documented. Buddhist ideas were circulating in the Mediterranean world through the Therapeutae, the Essenes, and the trade routes for over two centuries before Jesus taught. The specific argument Jesus makes in Mark 7:15 — that nothing external defiles, only what comes from within — is a Buddhist argument. Jesus makes it in Aramaic to a Jewish audience. The Buddha made it in Pali to Indian audiences five hundred years before. The form changed. The content did not.
— End of Chapter 7 —