Children of Blood and Bone: The Film Adaptation and Yoruba Belief

Somewhere in the first fifty pages, a reader stops and types a name into a search bar. Òya. Ṣàngó. Yemọja. The book has just used the word as if the reader should already know it, and the reader — Nigerian-American, or Ghanaian-British, or simply curious — half does. It sounds like something a grandmother said once, in a sentence nobody translated.

For a great many people, that is how the òrìsà first arrived: through Children of Blood and Bone, Tomi Adeyemi's 2018 debut, and now through the film adaptation that has been circling the novel since before it reached shops. Somewhere along the way a sentence hardened into a fact — that the novel is Yoruba mythology, and that watching the movie will be watching Yoruba gods.

It is worth tracing where that sentence came from, because it does have a source. The source is thinner than the belief.

Is Children of Blood and Bone based on Yoruba mythology?

Not exactly. It borrows from it. Adeyemi's Orïsha is an invented kingdom with an invented magic system — ten clans of maji, each with a domain and a deity — and the names hung on that structure come from Yoruba tradition, mostly from the òrìsà (aw-REE-shah), the divine beings at the centre of Yoruba religious life in Nigeria, Benin, and across the Atlantic. The borrowing is real, it is done with obvious care, and it is not a hoax. But a magic system is not a theology. In the novel, power is inherited, colour-coded, and lost when a king destroys it. In Yoruba practice, there is no equivalent event, no clan grid, and nothing that works the way maji magic works. The novel is a fantasy that reaches into a living tradition for its vocabulary. That is a different thing from being about it.

Adeyemi has never claimed otherwise. Almost everyone downstream of her has.

The comp line, and what it did

The small history starts in 2017, before publication. The screen rights sold to a major studio in a deal the trade press treated as an event — a debut, unreleased, and already a franchise. To move that fast, a book needs a sentence a stranger can repeat. The sentence, in the press and on the jacket, was some version of an epic fantasy inspired by West African mythology.

That line is accurate. It is also load-bearing in a way nobody intended. "Inspired by" is a hinge word: it faces both directions. To a publisher it signals flavour, texture, a world that will not read like another Tolkien remainder. To a reader who has spent their whole life being handed Greek gods by name and African religion as a vague continental smudge, "inspired by West African mythology" reads as a promise of instruction. Finally, here is ours, written down.

Both readings travelled together. Then the qualifier began to wear off.

What the book actually does with the names

Read the novel with this question in mind and the architecture is visible. Zélie is a Reaper, a maji whose power runs through death and spirit; other clans hold water, fire, iron, healing, the mind. Ten of them, tidy, each tied to a named deity. That symmetry is a novelist's invention, and a good one — it lets a reader hold a whole world in their head by chapter three.

What Adeyemi imports is language. The names carry their diacritics. Yoruba words appear in the mouths of characters rather than in italicised footnotes, which is a deliberate choice and a generous one: the reader is trusted to keep up. Àṣẹ — in Yoruba thought, roughly the power that makes things happen, the force that lets a word take effect — becomes something close to the fuel in the magic. Olódùmarè, the supreme being in Yoruba cosmology, is present as the sky god, called the Sky Mother in the novel's telling.

And then there is the author's note, which almost nobody quotes. Adeyemi wrote that the story took shape while she kept turning on the news and seeing unarmed Black people killed by police. That is the book's actual subject: a marked class, hunted by a state, and what grief does to the people left. Divinê rs are stopped, taxed, beaten, drowned. The magic is the engine, but the fuel is contemporary American violence and Black rage about it.

A novel with that at its centre is not a religious primer. It never wanted to be.

What the author has actually said

Adeyemi's own account of where the material came from is modest and consistent. She has described encountering the òrìsà during a study-abroad stay in Salvador, in Bahia, Brazil — which is itself a telling detail, because Bahia is where Yoruba religion crossed the Atlantic in the holds of slave ships and reassembled itself as Candomblé. She came to it as a Nigerian-American who had not been raised inside it. She read, she asked, she built a world.

What she has not done is present herself as an initiate, a priest, or an authority on practice. She is a novelist who found something enormous and wrote a fantasy with it. On the record, that is the whole claim.

The belief that grew on top of it — that the trilogy is a canonical account of Yoruba religion — was assembled by other people, one small compression at a time.

The chain of shorthand

Here is how a hedge dies.

A review has 900 words and needs to explain the world fast, so "inspired by West African mythology" becomes "drawing on Yoruba mythology." A roundup post has one line per title, so that becomes "based on Yoruba mythology." A study guide aimed at a Year 9 English class needs a heading, so it becomes "Yoruba mythology in Children of Blood and Bone," with a chart. A fan wiki, working honestly and at speed, lists the maji clans beside the deities as though the pairing were traditional. A social post has a character limit, so it becomes "the Yoruba gods" over a still from the trailer. Nobody lied. Each step lost one qualifier, and there were more steps than qualifiers.

The screen version compresses hardest of all, because marketing has less room than a review does. Footage plus a drum-led score plus reported Afrobeats names on the soundtrack produces, in a viewer's mind, a single impression: this is the real thing, finally, at scale. A film adaptation cannot put an asterisk on a trailer.

So it lands as authority. And the tradition it points at is sitting right there, unadapted, considerably older and stranger than the version arriving on screen.

What the òrìsà tradition is when nobody is adapting it

Start with the shape. In Yoruba cosmology there is Olódùmarè, the source — remote, not petitioned directly, not depicted. The òrìsà are the ones people actually deal with: hundreds of them, associated with rivers, iron, thunder, smallpox and its healing, the crossroads, the wind. "Pantheon of gods" is the phrase English reaches for, and it fits badly. Many practitioners describe the òrìsà as emissaries or expressions of a single source, which puts the system closer to some strands of Hindu thought than to Olympus. Versions differ on this, and the difference matters to the people holding it.

Then there is orí — literally "head," and in practice something like a person's inner destiny, chosen before birth and carried through life. Yoruba religious thought spends a great deal of attention on orí, on whether a life is running along the destiny it agreed to and what can be realigned when it is not. That question, not magic, is the tradition's centre of gravity.

Divination is how the question gets asked. Ifá is a body of knowledge organised into 256 odù, each with its own verses, stories, and prescriptions, held and interpreted by a babáláwo (bah-bah-LAH-woh), a diviner who trains for years and often for decades. There is no shortcut into it and no reading it off a page. This site describes what divination is and who performs it; it does not print procedures, because the procedures belong to lineages and the people initiated into them.

Relationship to a particular òrìsà is not chosen from a menu either. It typically comes through family, through community, or through divination that identifies the òrìsà who owns a person's head — and then through initiation, which is a commitment with obligations attached. Nobody is born a Reaper.

And all of it is present tense. Ifá is consulted this week in Ọ̀ọ̣ and Ibadan and Lagos. Candomblé terreiros are open in Salvador. Lucumí — often called Santería — is practised in Havana, Miami, and New Jersey; Orisha worship is established in Trinidad; drummers and priests work in Brooklyn and Houston and London. The tradition did not end so that a novel could recover it. It never stopped.

One name, several rivers

Oral tradition varies by region, lineage, and teller, and the Atlantic crossing added another layer of variation. The same òrìsà is known by different names, and sometimes by a different emphasis, depending on where you are standing.

In some accounts these are the same being under different tongues; in others, generations of separate practice have made them genuinely different. Both positions are held by serious people.

Why Èṣù is not the devil

One error travels with the òrìsà wherever they go, and it is worth stopping on because a screen version will almost certainly inherit it in some form.

Èṣù stands at the crossroads. He carries messages between people and the òrìsà, opens and closes the way, and in the stories he tests people — often by exposing exactly the flaw they were hiding. Nineteenth-century missionaries translating the Bible into Yoruba needed a word for Satan and reached for Èṣù. The choice stuck, and a figure whose job is communication and moral testing has been read as evil ever since, including by people whose own great-grandparents knew better.

The correction is simple and unheated. Trickster is not the same as devil. A being who teaches by disruption is a familiar figure in a great many traditions, and the theology it belongs to has no adversary of God at all.

The other tension the adaptation carried

There is a second story running alongside the first, and it is not about accuracy at all.

When the first footage arrived, Adeyemi's public response was not celebration. She spoke about the making of the film adaptation in the language of distress rather than triumph — an author describing years of a process she did not control. Studios and authors dispute these things; the point here is not to referee it, and this piece has no standing to.

The point is narrower. Two questions get argued as if they were one. Is the film faithful to Yoruba religion? and did the author get a fair deal on her own book? The first is aimed at the wrong target, because the novel was never a religious text to be faithful to. The second is a real question about labour and creative control, and it does not require anyone to litigate theology.

Holding them apart is a favour to everybody. It lets the novel be judged as a novel, the deal be judged as a deal, and the tradition be described on its own terms rather than as a fidelity scorecard for a studio.

Names and terms

• Òrìsà — the divine beings of Yoruba religion, associated with forces, places, and human concerns.
• Olódùmarè — the supreme source in Yoruba cosmology; not approached directly in most practice.
• Àṣẹ (AH-sheh) — the power that makes things happen; the force that lets a word or act take effect.
• Orí — "head"; a person's inner self and chosen destiny.
• Ifá — the Yoruba divination system, organised into 256 odù, each with its own verses.
• Babáláwo — a diviner trained in Ifá; the title means, roughly, father of secrets.
• Lucumí / Santería — the Yoruba-derived tradition as practised in Cuba and its diaspora.
• Candomblé — the Afro-Brazilian tradition, strongest in Bahia, that carried òrìsà worship across the Atlantic.
• Orïsha (with the diaeresis) — the fictional kingdom in Adeyemi's trilogy. The spelling is the tell.

The two sentences

None of this is an argument against the books, which are doing something valuable: a generation of readers now knows these names, and knowing a name is where curiosity starts. It is an argument against letting the shortest version of a sentence become the only version.

The myth goes like this: Children of Blood and Bone opened a door onto Yoruba religion, and the film adaptation walks the rest of us through it.

The more accurate version: a Nigerian-American novelist borrowed a handful of names from a living tradition to build a story about grief and state violence — and that tradition, older than the borrowing and consulted this morning in Ọ̀yọ̣ and Havana and Bahia and Brooklyn, was never waiting behind the door at all.