The Question Nobody Asks
Most believers would never consider changing who they worship. Very few stop to ask who set the calendar they worship by.
Mr. Spock would raise one eyebrow at that. If the One we worship matters, then the appointed time to meet Him deserves at least a logical review.
I keep the Sabbath by the moon. This essay lays out why, as plainly as I can. Scripture defines the Sabbath as an appointed time. The Creator assigned the lights in the sky, especially the moon, to govern appointed times. Therefore the Sabbath should be reckoned by the lunisolar calendar.
Every link in that chain can be checked in your own Bible. You don’t have to take my word for any of it. Spock wouldn’t.
I’m also not going to hang the case on one verse. Anyone can prove almost anything with a single text pulled out of context. Scripture describes a better method: “precept upon precept... line upon line... here a little, and there a little” (Isaiah 28:10). And it sets a standard of proof: “at the mouth of two witnesses, or at the mouth of three witnesses, shall the matter be established” (Deuteronomy 19:15). So each premise below gets more than one witness.
Premise One: The Creator Set the Clock
Genesis 1:14 says the lights in the heavens are “for signs, and for seasons, and for days, and years.” The English word “seasons” translates the Hebrew mo’adim (Strong’s H4150). It means appointed times, set meetings, or fixed feasts.
Psalm 104:19 makes the assignment specific: “He appointed the moon for seasons.” Same word, mo’adim.
So timekeeping was not left to committees. It was built into the sky on day four, before a single human existed to argue about it. A clock visible to every person on earth, needing no batteries, no software updates, and no royal decree. Spock would call that efficient design.
Premise Two: The Sabbath Is an Appointed Time
Leviticus 23 opens with a heading: “Concerning the feasts of the LORD... even these are my feasts.” The word for feasts is again mo’adim. Then verse 3 names the first item on the list: the weekly Sabbath.
That placement matters. The Sabbath is not a separate category standing outside the appointed times. It leads them.
The word itself tells you what kind of time this is. The same mo’ed shows up in the name of the tent where Moses met with God, “the Tabernacle of the congregation” (Exodus 33:7), more literally the tent of meeting. An appointed time is not a rule on a chart. It is a meeting.
Think of it like a standing date night. You and your spouse pick one evening a week, just the two of you. Now picture showing up faithfully every week, flowers in hand, on the wrong night. Your heart is right. Your effort is real. But you’re working from a different calendar than the one who set the date. That is the question this essay is really asking.
Put it in logical form. If the Sabbath belongs to the mo’adim, and the mo’adim are governed by the heavenly lights, then the Sabbath is governed by the heavenly lights. The weekly Sabbath is the first appointed time named in Leviticus 23, and the moon was appointed to keep the appointed times. A calendar that ignores the moon cannot keep the first of them.
Premise Three: The Text Ties Sabbaths to the Month
The feasts are anchored to numbered days of a lunar month. Passover falls on the 14th of the first month (Exodus 12:6). Unleavened Bread begins on the 15th (Leviticus 23:6). Tabernacles begins on the 15th of the seventh month (Leviticus 23:34).
Lunisolar Sabbath keepers point to a pattern. Leviticus 23:39 calls both the 15th and the 22nd of the seventh month a sabbath. Many also read Exodus 16 as placing a Sabbath on the 22nd of the second month: the people arrive in the wilderness on the 15th, gather manna for six days, and rest on the seventh.
On this reading, weekly Sabbaths fall on the 8th, 15th, 22nd, and 29th of every month. The new moon day stands apart from the work week. Advocates point to Ezekiel 46:1, where the gate is “shut the six working days” but opened “on the sabbath” and “in the day of the new moon,” as treating the two separately.
Here is the test. On a continuous week, those month dates land on different weekdays every month. Only a month-anchored week keeps them lined up. The pattern is either a remarkable coincidence or a design feature, and Vulcans are suspicious of remarkable coincidences.
How the Clock Was Reset
If the lunisolar calendar is so precise, why did it fade? The record shows a gradual shift from watching the sky to calculating on paper.
In 45 BC, Rome adopted the Julian calendar, a fixed solar system built for taxes, contracts, and armies. In AD 325, the Council of Nicaea set Easter by its own rule, separating Christian observance from Jewish reckoning of Passover. Around AD 359, Hillel II published a calculated Hebrew calendar, since persecution had scattered the witnesses who once confirmed the new month. In 1582, Pope Gregory XIII corrected the Julian drift, and trade carried his calendar around the world.
Here is the part Spock would find most interesting. Even after Nicaea, the church never fully cut the moon out. Easter is still set by the moon to this day, which is why it lands on a different Sunday every year. Passover and First Fruits, the days Yahushua was crucified and rose, have no fixed date on the Gregorian calendar at all. You need a lunisolar calendar just to find them.
Notice what is missing from that list: a prophet. Each change came from councils, emperors, and administrators. A calendar’s authority is only as strong as its source.
If you’d rather see the drift than read about it, I made a series of short videos that walk through each step, from the sky-watched month to the calendar on your wall. They’re on the Remembr YouTube channel.
Objections, Answered Honestly
A sound argument has to survive its best counterargument. Spock never won a debate by ignoring the data, and neither should we.
“I worship every day. Isn’t that enough?” Daily prayer and devotion are good, and Scripture asks for them. But the commandment asks for something different: “Six days shalt thou labour, and do all thy work: But the seventh day is the sabbath” (Exodus 20:9-10). It’s not either/or. Most of us would never tell our spouse that thinking about them every day means we can skip date night.
“Aren’t these the Jewish feasts?” Read how Leviticus 23:2 introduces them: “Concerning the feasts of the LORD... even these are my feasts.” Not Israel’s feasts. His. The invitation comes from the host, and it was never limited to one guest list.
Philo and the continuous week. This is the strongest objection, and it deserves careful study. Philo of Alexandria, writing in Yahushua’s own lifetime, contrasted states that “keep the holy festival only once in the month, counting from the new moon” with “the nation of the Jews,” who “keep every seventh day regularly, after each interval of six days” (On the Decalogue 96). He also lists the Sabbath and the new moon as separate festivals (Special Laws 2.41).
Lunisolar advocates answer with the 1906 Jewish Encyclopedia. Its article on the week says “the week of seven days was connected with the lunar month,” and it reads the command in Leviticus 23:15 that the weeks to Pentecost be “complete” as a sign that weeks were once counted in a way that could break that rule. The same article also says, “At an early date, however, this intimate connection between the week and the moon must have been dissolved.” Quote it as written. Some websites insert “[359 A.D.]” into that sentence. It is not in the original.
Rome and the day of Saturn. Cassius Dio, describing Pompey’s capture of Jerusalem in 63 BC, says the Jews dedicated to their God “the day called the day of Saturn” (Roman History 37.16). Critics read this as proof the Sabbath already fell on a fixed weekday. Advocates note that Dio wrote more than two centuries after the event, through the lens of the planetary week of his own day. Dio himself says the custom of naming days after the planets was “comparatively recent” (37.18).
Leviticus 23:39. Critics point out that the word used for the 15th and 22nd of the seventh month is shabbaton, a solemn rest that Scripture also applies to annual feast days. That is a fair point. Advocates answer that the annual rests and the weekly pattern land on the same dates, which is the very alignment a continuous week cannot produce year after year.
Colossians 2:16. “Let no man therefore judge you... in respect of an holyday, or of the new moon, or of the sabbath days.” Many read this as freedom from observance. Advocates note that Paul names the new moon and the Sabbath together, which assumes a moon-linked calendar, and read the verse as telling believers not to let outsiders shame them for keeping it.
Romans 14:5. “One man esteemeth one day above another: another esteemeth every day alike.” The context concerns disputed matters among believers, such as food and fasting. Advocates argue that a commanded Sabbath is not a disputable matter.
Logic does not require objections to vanish. It requires that they be answered honestly.
One more thing, because it matters. Scripture is generous with people who simply didn’t know. Paul told the Athenians, “the times of this ignorance God winked at” (Acts 17:30). If you’ve kept Saturday or Sunday your whole life with a sincere heart, nothing here is an accusation. The faith of the people who raised you, and your own, was real. This isn’t about anyone’s past. It’s about what you do with what you find.
Conclusion: Test the Hypothesis
Yahushua said, “If ye love me, keep my commandments” (John 14:15). Keeping His appointed times is not about winning a calendar argument. It is a way of loving Him on His schedule instead of ours.
So run the experiment. Open Blue Letter Bible and look up H4150 for yourself. Then pull up the U.S. Naval Observatory’s moon phase data and find the next conjunction, the moment the moon passes between the earth and the sun. That begins the month. (Some keepers count from the first visible crescent instead. I count from the conjunction.) Count to the 8th day and rest.
To make that count easier, I’m building an app. Remembr tracks Sabbaths, new moons, and feast days on a modern lunisolar calendar, aligned with the rhythm of heaven and earth. Use it as a shortcut, but check it against the USNO data yourself. That’s the point of this whole essay.
The believers in Berea were commended for exactly this. They heard Paul out, then “searched the scriptures daily, whether those things were so” (Acts 17:11). That’s all I’m asking.
Spock would approve of the method: a published, measurable source anyone can check, instead of a decree you’re asked to trust. Decide with your own eyes and your own Bible whether the clock in the heavens still keeps time.
Fascinating. Live long, and rest well.
Sources
Emil G. Hirsch, “Week,” Jewish Encyclopedia (1906)
Philo, On the Decalogue 96, C. D. Yonge translation
Philo, On the Special Laws 2.41-56, C. D. Yonge translation
Cassius Dio, Roman History 37.16-18, Loeb translation via LacusCurtius
U.S. Naval Observatory, Phases of the Moon
Remembr, lunisolar calendar app and video shorts
Blue Letter Bible, Strong’s H4150