The Filioque Explained
Two Different Authority Disputes
The filioque, Latin for “and the Son,” was added to the Creed in the Latin West and rejected by the Eastern Orthodox churches. The history of Saturday and Sunday is different: Sunday assembly appears before Constantine, Saturday liturgy continued widely, and later ecclesial and civil rules shaped regional practice. The two disputes may be compared as questions of authority, but their histories differ.
What Is the Filioque?
The Nicene Creed was formulated at the First Ecumenical Council (Nicaea, 325 AD) and expanded at the Second (Constantinople, 381 AD). The 381 form reads:
The Third Council of Toledo added the Latin word filioque to the Creed in Spain in 589 AD, and the clause spread gradually through the Latin West. Rome adopted the clause in the Creed in 1014 AD under Pope Benedict VIII. No council received as ecumenical by both East and West authorized the addition. The Eastern Orthodox churches have not received it as a legitimate alteration of the Creed.
“But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall testify of me.”John 15:26 (KJV)
John 15:26 names the Father as the source from whom the Spirit proceeds. Eastern theology treats that wording as decisive for the Spirit’s eternal origin. Latin theology argues that the Spirit proceeds from the Father and the Son as one principle, drawing on a broader set of texts and theological distinctions. John 15:26 does not contain the added clause, but that observation alone does not answer every part of the later theological debate.
Where the Comparison Holds
The comparison has a limited use. Both disputes ask how Scripture, inherited practice, councils, and ecclesial authority relate. Their histories remain distinct: the filioque concerns an addition to a conciliar creed, while Sunday observance developed across several regions and centuries rather than through one Roman decree.
| Dimension | Filioque | Saturday and Sunday |
|---|---|---|
| Question at issue | Whether the Western clause may alter the received Creed | Whether Sunday practice carries fourth-commandment authority |
| Received text | The 381 Creed says the Spirit proceeds from the Father | Exodus 20:8–11 names the seventh day as the Sabbath |
| Later development | The Latin West adds “and the Son” | Sunday becomes the principal Christian assembly and rest day in most churches |
| Supporting authority | Western theology, councils, and later Roman reception | Resurrection theology, first-day texts, tradition, canons, and civil law |
| Conciliar status | No council received as ecumenical by both East and West authorized the clause | No single council instituted Sunday practice throughout Christianity |
| Historical markers | Toledo III in 589 AD; Roman use in 1014 AD | Second-century assembly; civil law in 321 AD; Laodicea c. 363–364 AD |
| Eastern practice | Eastern Orthodox churches retain the Creed without the clause | Sunday remains primary while Saturday retains distinct liturgical honor; Ethiopia also preserves seventh-day rest |
| Argument presented | The historical and textual case weighs against adding the clause to the received Creed | The New Testament records no explicit transfer of Sabbath sanctity to Sunday |
Why This Matters
The Conciliar Objection
The Eastern objection concerns the authority to alter a creed received through an ecumenical council. The Western clause arose regionally and reached Rome through a gradual process, not through one bishop’s isolated act.
The Western Case
Catholic accounts ground Sunday in Christ’s resurrection, apostolic tradition, and the Church’s authority. The book disputes that these establish a transferred fourth commandment, but it must state the Catholic argument in its own terms.
The Eastern Witness
The Eastern Orthodox churches preserved the 381 Creed without the added clause and retained a distinct liturgical place for Saturday. Ethiopian Orthodox practice also includes seventh-day rest. These facts complicate a simple Sunday-replacement story, but they do not by themselves prove the book’s Sabbath theology.
The Test
The filioque dispute tests the authority to alter conciliar language. The Sabbath dispute tests whether resurrection practice and ecclesial tradition establish a change that the New Testament never states as a transfer command.
The Great Schism (1054 AD)
The filioque was one major theological issue in the long estrangement between Rome and Constantinople, alongside disputes about papal jurisdiction, liturgy, and politics. The exchange of anathemas between Cardinal Humbert’s delegation and a Constantinopolitan synod in 1054 became a symbol of that breach, not its single cause.
Rome had begun using the clause in the Creed in 1014. Eastern Orthodox churches continue to reject the addition.
The Thread Connecting Both Questions
The strongest connection between these disputes is a question, not a verdict: what authority may define doctrine or reshape received practice? The filioque gives that question a clear conciliar form. Sabbath and Sunday history supplies a more complex record of early first-day assembly, continuing Saturday liturgy, regional prohibitions, and later common-rest laws.
The recurring thread is evidence of Saturday worship and, in some communities, seventh-day rest. It is not proof of uninterrupted institutional Sabbatarian succession.