A Roman soldier stationed in Britain around 200 CE carved a three-pointed spiral into a stone near Hadrian’s Wall. A thousand miles southeast, an Egyptian priest painted a looped cross on a coffin in Thebes. Neither man knew the other existed. Both were drawing knots that would outlive their empires. The Celtic knot and the Knot of Isis (Tyet) are both looped symbols of eternity, but they emerge from fundamentally different worldviews: the Celtic knot represents endless interconnection without a single beginning or end, while the Knot of Isis represents resurrection through a specific divine act.
The difference is not decorative. It is theological.
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The Celtic knot and the Knot of Isis (Tyet) both symbolize eternity, but one represents endless interconnection while the other represents resurrection through a specific goddess. Here is how they differ.
What Are These Two Knots, Exactly?
The Celtic knot (or interlace) is a continuous, unbroken line that loops back on itself with no visible start or finish. It appears in Irish and British Insular art from roughly the 7th century CE onward, though similar interlace patterns existed in Roman and Germanic traditions before the Celts adopted them. The most recognizable forms are the triquetra (three-pointed), the quaternary knot (four-pointed, often called the “Celtic cross knot”), and the elaborate spiral triskelion that predates Christianity.
The Knot of Isis (also called the Tyet, Tet, or Blood of Isis) is an Egyptian hieroglyph resembling a looped ankh with downward-turned arms. It appears in funerary texts from the Old Kingdom (c. 2686–2181 BCE) onward, most prominently in the Pyramid Texts and later the Book of the Dead. The Tyet is made of red jasper or painted red, and it is tied to the goddess Isis specifically, not to eternity in the abstract.
One knot asks you to trace its line forever. The other asks you to remember a specific death and rebirth.
Where Did Each Knot Come From?
The Celtic Knot: Borrowed and Transformed
The earliest known interlace patterns in the British Isles appear on Roman-era mosaics and metalwork from the 3rd and 4th centuries CE. These were not Celtic inventions. The La Tène culture (c. 450–50 BCE) preferred curvilinear spirals and triskelions, not the tight, woven loops we now call Celtic knots. The interlace style that defines medieval Irish art came from Coptic Egypt and Byzantine Syria, carried north along trade routes and monastic networks.
The Book of Durrow (c. 650–700 CE) and the Book of Kells (c. 800 CE) are the primary witnesses. Monks in Irish scriptoria adapted the Mediterranean interlace into something distinctly Irish: tighter loops, more symmetrical, often terminating in animal heads or geometric nodes. The Lindisfarne Gospels (c. 715 CE) show the style perfected.
By the 8th century, the triquetra appeared on stone crosses in Iona and Kells, and the four-pointed knot became standard on high crosses like the Cross of Muiredach (c. 900 CE) at Monasterboice. The pattern was never a single “Celtic symbol” in the ancient sense. It was a decorative technique that later generations assigned meaning to.
The Knot of Isis: A Goddess’s Blood
The Tyet appears in the Pyramid Texts of Unas (c. 2350 BCE), the oldest known religious texts in the world. Utterance 366 reads: “The Knot of Isis is given to you, your protection is in it.” By the Middle Kingdom (c. 2055–1650 BCE), the Tyet was standard equipment in tombs, often placed on the mummy’s chest or throat.
The symbol is explicitly tied to the Osiris myth. When Set murdered Osiris and scattered his body, Isis gathered the pieces and bound them together. The Tyet represents the cloth she used, stained with her blood. In the Book of the Dead, Spell 156 instructs: “You shall make a Tyet of red jasper, dipped in the juice of the ankham plant, and placed at the throat of the deceased on the day of burial.”
The red color is not arbitrary. It is the blood of Isis, the life force that reanimated Osiris. The knot is a physical object, not an abstraction. It was manufactured, consecrated, and placed on a body.
What Does Each Knot Mean?
The Celtic Knot: Eternity Without a Center
The Celtic knot symbolizes endlessness and interconnection. Because the line has no beginning and no end, it represents the eternal cycle of life, death, and rebirth, or the infinite nature of the divine. The triquetra specifically was adopted by early Irish Christians to represent the Trinity, though it predates Christian use by centuries.
But the meaning is structural, not narrative. The knot does not tell a story. It does not refer to a specific event or deity. It is a visual statement that everything is connected and nothing truly ends. The line loops around itself, touching every part of the design, and that is the whole point: no part is separate from the whole.
In modern Pagan and Celtic Reconstructionist practice, the knot is used in meditation and spellwork to represent binding, protection, and continuity. A knot drawn on a talisman or carved into a wand is meant to hold energy in a closed circuit. It does not ask for intervention from a specific god. It simply is.
The Knot of Isis: Resurrection Through a Specific Act
The Tyet symbolizes resurrection and protection, but only because of what Isis did. It is not a generic symbol of eternal life. It is a specific claim: Osiris died, Isis gathered him, and he rose. Anyone who wears the Tyet participates in that story.
The Book of the Dead Spell 156 makes this explicit: “The blood of Isis, the magic of Isis, the power of Isis, these are protection for this great one.” The knot is not a meditation on eternity. It is a tool. It guards the throat of the dead person so they can speak in the afterlife. It prevents the head from being separated from the body. It ensures the soul remembers its name.
In Kemetic (Egyptian Reconstructionist) practice today, the Tyet is used in ancestor work and funerary rites. A red jasper Tyet is placed on the altar during rites for the dead, or worn as a pendant to invoke Isis’s protection. It is not a symbol of abstract unity. It is a claim on a specific goddess’s power.
How Are They Used in Practice?
Celtic Knot Practices
The Celtic knot appears in jewelry, tattoos, and carved talismans, but its practical use in occult work is often misunderstood. In traditional Irish folk magic, the knot was not drawn for its own sake. It was a binding pattern used in spell cords and woven talismans.
A caim (a protective circle drawn with the right hand) was sometimes traced in a knot pattern. The Ogham alphabet was occasionally written in interlace form. But the elaborate knots we see on modern Celtic jewelry are largely a 19th-century revival invention, popularized by the Celtic Revival movement and later by J.R.R. Tolkien’s illustrations for The Lord of the Rings.
For the contemporary practitioner, the Celtic knot is most useful as a focus for meditation on interconnection. Drawing a triquetra while reciting a prayer to the triple goddess or the Christian Trinity creates a closed circuit of intention. The knot can also be carved into altar tools to seal their energy.
Knot of Isis Practices
The Tyet has a clearer historical practice because the texts survive. In ancient Egypt, the Tyet was:
- Placed on the mummy’s throat or chest during burial
- Made of red jasper or painted red wood
- Dipped in plant juice (the ankham plant, possibly a type of lotus)
- Inscribed with the name of the deceased and the goddess Isis
- Worn as an amulet by the living for protection during childbirth
For the modern Kemetic practitioner, the Tyet is used in:
- Funerary rites: placed on the altar or on the body of the deceased
- Protection spells: drawn on paper or carved into red stone, then worn or placed in the home
- Invocation of Isis: held during prayer or meditation when asking for her aid
- Childbirth rituals: worn by the mother to invoke Isis’s role as protector of Horus
The key difference is specificity. The Tyet does one thing: it connects the wearer to Isis’s power. The Celtic knot does not connect you to any particular deity. It connects you to the pattern itself.
How Do They Compare Directly?
| Aspect | Celtic Knot | Knot of Isis (Tyet) |
|---|---|---|
| Origin | 7th century CE, British Isles | c. 2350 BCE, Egypt |
| Primary meaning | Endless interconnection | Resurrection through Isis |
| Material | Stone, ink, metal | Red jasper, red wood |
| Color association | None fixed | Red (blood of Isis) |
| Deity association | None (later Christian Trinity) | Isis specifically |
| Use in death | Grave markers, memorials | Placed on mummy’s throat |
| Use in life | Jewelry, meditation, binding | Protection, childbirth, invocation |
| Theological claim | The universe is a closed loop | A specific goddess saved her husband |
The Celtic knot is horizontal: it connects all things in the present. The Tyet is vertical: it connects the dead to the divine.
What Do People Get Wrong?
“The Celtic knot is an ancient Druid symbol.”
There is no evidence that Druids used interlace knots. The earliest Celtic knots appear in Christian manuscripts, not in pre-Christian Celtic sites. The triskelion and spiral designs are older, but the tight interlace we call a Celtic knot is a product of monastic scriptoria.
“The Knot of Isis is just an ankh with different arms.”
The Tyet and the ankh are different symbols with different functions. The ankh represents life itself. The Tyet represents the specific act of resurrection performed by Isis. They are sometimes combined in Egyptian art, but they are not interchangeable.
“Both knots mean the same thing because they are both loops.”
This is the most common error. A loop can mean many things. The Celtic knot loops without reference to any story. The Tyet loops because Isis tied a cloth around her husband’s body. The shape is similar. The meaning is not.
FAQ
Is the Knot of Isis also called the Blood of Isis? Yes. The Tyet is often called the “Blood of Isis” because it represents the cloth stained with her blood during the resurrection of Osiris. Red jasper amulets were made to match this color.
Can I use the Celtic knot in Egyptian magic? You can, but it would be a modern syncretic practice with no historical precedent. Egyptian magic used the Tyet specifically. The Celtic knot carries different associations and energies.
Which knot is better for protection magic? It depends on your tradition. The Tyet is more specific and historically documented for protection of the dead and the living. The Celtic knot is better for general binding and warding, especially if you work within a Celtic or Pagan framework.
Do I need to be initiated to use either knot? No. Neither symbol requires initiation. The Tyet was sold in Egyptian markets as a common amulet. The Celtic knot appears in public art and jewelry. Respect the symbols, but do not fear them.
Closing
The Celtic knot and the Knot of Isis both loop, but they loop toward different horizons. One traces the infinite line of existence. The other ties a knot around a specific story of death and return. If you are choosing between them, ask yourself what you need: a meditation on interconnection, or a direct appeal to a goddess who has already done what you are asking for. For more on protective symbols and their uses, see our guide to talismans and amulets or explore the glossary of related symbols. For a deeper look at how symbols carry meaning across traditions, read our guide to sacred geometry in occult practice.