Did Constantine Change the Sabbath?

Did Constantine Change the Sabbath?

By Kelly McDonald, Jr.

Among the commonly held beliefs in the Sabbath community is that the Roman Emperor Constantine changed the Sabbath or prohibited its observance. Those who hold this view typically claim that it occurred at the Council of Nicaea in 325 AD or laws enacted in 321.

Before we delve into this subject, it is important to understand how historical research is done.

When we undertake a scholarly review of a subject, it is best to start with the primary source material available to us. A primary source is a person or object that records historical facts about the time period being examined. If someone writes a book or article and claims “Constantine changed the Sabbath” then that claim is only valid if it is supported by primary source evidence.

From primary sources, we are able to draw a degree of certainty about events that happened in a specific time period. In general, the more primary sources we have, the greater degree of certainty that can be reached (but new evidence can always update our perspective). When it comes to Constantine and the Sabbath, the primary sources are broken down into three categories: 1) the laws of the time period, 2) preserved writings about the council of Nicea, and 3) contemporary writers who recorded Constantine’s reign.

Laws issued during the reign of Constantine are chiefly contained in two codes of Roman Law. The first is called the Codex Theodosianus, and it was issued by Theodosius II in 438. The second is the Codex Justinianus, which was issued by Justinian in the 530s. These are compilations of Roman laws categorized by subject matter. English versions of them are available (I have access to both). Among the laws issued by Constantine, none prohibit the Sabbath.

The Council of Nicaea is the second primary source usually cited in regards to this subject. To view the proceedings of this council in Latin (with some notes in Greek), one would view volume 2 of Sacrorum conciliorum nova et amplissima collection edited by Joannes Dominicus Mansi (1759). It is listed under the title “Sanctum Concilium Nicaenum Primum Generale” starting on page 635. To review details from this council in English, read A history of the Christian Councils from the Original Documents by Charles Joseph Hefele (translated into English by William R Clark, second edition from 1883). The historical background starts on page 231, but the canons or church rulings (with commentary) are found on pages 375-435. Not a single canon from Niacea referenced the Sabbath.

A third source for Constantine’s reign are the historians who lived in his time period.  Eusebius wrote a brief history about Constantine’s life and reign called The Life of Constantine. Another man named Lactantius, who was the personal tutor for Constantine’s son Crispus, also recorded some events. Neither primary sources alludes to Constantine banning or curbing Sabbath observance. New evidence from Eusebius’ writings now show that Constantine protected Sabbath observance (see the link at the bottom of this article).

Setting the Record Straight

Let’s set the record straight. Firstly, no one can change the Sabbath. Think about that assertion for a moment. The Sabbath has been and ALWAYS will be Friday sunset to Saturday sunset. No one can change that eternal truth. Secondly, primary sources from the time period indicate that Constantine did not attempt to ban or forbid Sabbath observance. New evidence shows that he protected it! How did confusion arise concerning this subject? There’s misunderstanding about it because Constantine took actions that indirectly affected the Sabbath. Let’s explore this further.

On March 7 321 AD, he approved the “day of the sun” as a rest day for the empire. Translated into English, the first part of this law reads: “All judges, city dwellers, skill workers, and the offices of all should honor the venerable day of the sun and rest. However, those placed in the country freely serve the fields of culture…” (CJ.3.12.2: Imperator Constantinus; English translation by Ayer).

In the Latin manuscript, the phrase translated as “venerable day of the sun” is venerabilis dies solis. Constantine’s decree was based upon his admiration for the celestial body we call the sun. This law appears to only apply to those in urban areas. People in the country were not bound by it. Notice that no worship is mentioned in the law. The decree did not mention God or Jesus Christ. In fact, the day after this Sun-day law, he enacted a law which allowed soothsayers to enter buildings where lightning had struck (CT: 16.10.1). This decree upheld an ancient Roman custom to pacify the ‘gods’.

On July 3 of the same year, he issued a second law which freed slaves from labor on Sunday and suspended certain legal proceedings. The language is reminiscent of protections granted to other ancient pagan celebrations. Sometime after these Sun-day laws, he ruled that the marketplaces were to be open when the special Roman market days (called nundinae) occurred on Sundays (Dessau, no. 704).

These two Sun-day laws mirror the ancient title Pontifex Maximus, which Constantine held at that time. To learn more about this subject, CLICK HERE.

What about the Council of Nicaea? He attended the gathering, but about a month into its proceedings. During it, he had a letter composed that Christians should not keep Passover like the Jewish people. Instead, he conveyed that people should follow the custom of the Roman Church, who celebrated Passover on Sunday after the 14th of Nissan (Eusebius, Life of Constantine, 3.17-18; Theodoret, Church History, 1.9). The Roman Church used this yearly gathering on Sunday as the reasoning to push Sunday gatherings every week.

This letter from Constantine had no force of law behind it. There’s no law from his reign that mentions this subject. Despite this decree, significant numbers of Christians still honored Passover with the Jewish people (see John Chrysostom’s work Eight Homilies Against the Jews).

Lastly, the historian Eusebius wrote that Constantine required all his troops to pray on Sunday (which he called the ‘Lord’s Day’ – Life of Const., 4.18-19). We have no corroborating evidence to verify this claim by the writer. Constantine continued to honor others gods decades into his reign and he was not baptized until just before his death (to learn about Constantine’s veneration for the sun, click here). Moreover, Eusebius was an ardent opponent of the Sabbath (see Odom, Sabbath and Sunday in Early Christianity, 292).

Constantine’s Sun-day laws created a government-mandated imitation day of rest beside the true Sabbath, which was still being observed. An entire generation of Christians (in urban areas) grew up honoring the seventh-day Sabbath because of the Bible but also resting on Sunday because it was civil law. In other words, people were socialized to rest on Sunday.

Another important development during his reign was the interweaving of the Roman Empire with the Roman Catholic Church. These events opened the door for more stringent Sunday laws with supposed Christian significance starting with the reign of Theodosius I from 379 to 395 (Click here to read more about these Sunday laws).

Despite these influences, most Christians continued to honor the Sabbath into the 400s AD (Click here to read primary sources on this subject).

We can safely conclude that Constantine did not change the Sabbath or attempt to ban or curb its observance. Some of his decrees and political activity indirectly impacted the Sabbath over a long period of time. He laid the foundation for later Emperors to enact Sunday laws supported by the Roman Church.  As the Roman Church became more influential in the political realm in the Dark Ages and Middle Ages, they pressured temporal authorities to enforce Sunday rest. Thus, Constantine influenced the Sabbath indirectly in ways that developed over centuries and in some ways has lasted down to our modern times.

UPDATE: 4-28-2020 – New Evidence shows that Constantine protected Sabbath observance – Click here to read this article. 

Kelly McDonald, Jr
BSA President, www.biblesabbath.org

Ayer, Joseph Cullen. A Source Book For Ancient Church History. New York: Charles Scribner’s Sons, 1913. pp 284-285.

Codex Justinian, Latin. Edited by Paulus Krueger. Corpus Iuris Civilis. Codex Iustinianus. Vol 2. Berlin, 1892. p 127.

Codex Theodosianus. Translated by Clyde Pharr. The Theodosian Code and Novels and the Sirmondian Constitutions. Princeton University, 1952. pp 44.

Dessau, Hermann, ed. Inscriptiones Latinae. vol. 1. no. 704. Berlin, 1892. p 158.

Eusebius. The Life of Constantine, 3.17-18, 4.18-19. Translated by Ernest Cushing Richardson. Nicene and Post Nicene Fathers, vol. 1. Second series. Edited by Philip Schaff and Henry Wace. New York: The Christian Literature Company, 1890. pp 524-525, 543-545.

Hefele, Charles Joseph. A history of the Christian Councils from the Original Documents. Translated and edited by William R Clark. Vol. 1, 2nd ed. Edinburgh, 1883. pp 231, 375-435.

Mansi Joannes Dominicus. Sacrorum Conciliorum Nova et Amplissima collection, vol. 2. New Edition. Florence, 1759. pp 635-692.

Odom, Robert L. Sabbath and Sunday in Early Christianity. Washington, D.C.: Review Herald Publishing Association, 1977. pp 291-292.

Theodoret. Church History, 1.8-9. Jackson, Rev. Blomfield. Trans. Schaff, Philip and Wace, Henry. Nicene and Post-Nicene Fathers. Second Series. Vol 3. New York: The Christian Literature Company, 1892.  pp 47-48.

16 thoughts on “Did Constantine Change the Sabbath?

  1. George Owato says:

    Thanks Kelly McDonald for this timely and spiritually refreshing article about how Constantine influenced the Keeping of Sunday as a day of worship. He indeed influenced it in several ways!

    Liked by 1 person

  2. jwile62 says:

    Essentially, you are saying that Constantine’s actions which seemed to indirectly impact Sabbath observance actually laid the foundation for the all-out assault by forces that sought to eliminate the observance of the Seventh Day Sabbath, if such a thing were possible. It speaks to how prior actions that were taken by (X), may provide a framework for (Y) to pursue outcomes that (X) neither desired, intended, or anticipated. Perhaps, then, Constantine has been unjustly vilified by parties seeking answers to the question of why has the observation of the Seventh Day Sabbath been veiled for so long and who was responsible? I believe that we have had a tendency to not hear the Word when it tells us that ha’Satan deceives the whole world, including the Church, if and when it walks beyond the express will of the Most High.


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