The Christ in Prophecy Journal

The Blood Moons: Tetrads Explained


What in the world is a Blood Moon?

Ever since 2008 when a pastor from Tacoma, Washington by the name of Mark Biltz announced that he had discovered an astronomical phenomenon that might point to the date of the Lord’s return, there has been much hoopla over what he calls the Blood Moon phenomenon. The resulting Blood Moon mania has simply swept Christendom over the past few years, causing some to conclude that a significant prophetic event will befall the world in September 2015.

Dr. David Reagan and I will discuss this theory and answer the question above on our latest Christ in Prophecy television episode. Watch below or click an icon above for a mp3 and transcript.

Super-Rare Celestial Event

Nathan Jones: A Blood Moon is a complete lunar eclipse. The earth passes between the sun and the moon and the shadow of the earth passes across the moon. The light from the sun bends around the atmosphere of the earth to give the moon a reddish color like blood.

Dr. Reagan: So not all lunar eclipses are full? There’s partial eclipses and also total eclipses? We are talking here about total eclipses that cause the moon to appear red?

Nathan Jones: Correct.

Dr. Reagan: Alright, now how rare is this?

Nathan Jones: During the 20th Century, for example, there were 229 lunar eclipses, but in total only 81 totally covered the moon. In the 21st Century, there are going to be 228 lunar eclipses, and of those 85 will be total eclipses.

Dr. Reagan: Total eclipses will be 85. There is something even more rare than that, I understand. It is what’s called a tetrad. What in the world is a tetrad?

Nathan Jones: A tetrad is four total lunar eclipses that occur over the course of two years.

Dr. Reagan: Four over the course of two years, okay. How often does that occur?

Nathan Jones: Very rare. There’s only been 87 tetrads since the time of Christ. In this century alone there will be eight tetrads. In some centuries there are never any at all.

Dr. Reagan: With only 87 tetrads since the time of Christ, we are talking about something very, very rare?

Nathan Jones: Yes, a tetrad is very rare.

Dr. Reagan: There’s something even rarer, and that’s what Mark Biltz discovered. That’s what I call the Feast Tetrads. What is that?

Nathan Jones: That’s when the Jewish feasts actually fall on the same dates as those four total lunar eclipses. We’re talking about the Feast of Passover and the Feast of Tabernacles.

Dr. Reagan: I think there was a Feast Tetrad in 1967-1968?

Nathan Jones: Yes. Passover happened on April 24, 1967. There was a Blood Moon on that day. Then on Tabernacles of October 18, 1967 another Blood Moon occurred. Then the next year a total lunar eclipse happened on Passover again on April 13, 1968, and then on Tabernacles on October 6, 1968.

Dr. Reagan: That’s four Blood Moons occurring over a period of two years and they all fell on the Jewish feasts of Passover and Tabernacles.

Nathan Jones: Super rare! Supposedly there’s been only eight since Jesus.

Three Tetrads

Dr. Reagan: The crucial point here is that Mark Biltz argues that these particular Feast Tetrads tend to be omens, or prophecies, or harbingers of major events that are going to occur in Israel. He gives us some examples. What three examples does he really focus on?

Nathan Jones: Biltz focuses on three example and the eighth tetrad in particular.

One example of a Feast Tetrad supposedly occurred in 1492 when Ferdinand and Isabella expelled all the Jews out of Spain. The second one was 1948 when the Jewish State was created. The third is attributed to 1967 during the Six Day War.

Dr. Reagan: On the surface those events sound very, very, important for those are three of the major events in Jewish history: 1) when the Jews were expelled from Spain, 2) when the nation of Israel was re-established and, 3) when the Six Day War occurred.

But, there is a problem here, and the problem is that the first one of those is not legitimate because the Blood Moon Feast Tetrad occurred after the event. While the Jews were expelled in 1492, the tetrad didn’t occur until 1493 and 1494. Therefore, the Feast Tetrad could not have been a harbinger, or a prophecy, or an omen beforehand of any kind for the Jewish people.

Nathan Jones: Yes, this Feast Tetrad totally missed by a full year.

Dr. Reagan: Totally missed! The second Feast Tetrad Biltz pointed to has to do with the re-establishment of the State of Israel which occurred on May 14, 1948. But again, the Feast Tetrad occurred a year later. It occurred in 1949-1950 and so again it was no harbinger or prophecy.

Nathan Jones: Yes, the Feast Tetrad missed the event again by a whole year!

Dr. Reagan: So, out of the eight of these Feast Tetrads that have occurred since the time of Christ, there has been only one that would serve as a prophecy, or an omen, or a harbinger of something great that was going to happen in Israel. That was the Six Day War in 1967, because the Feast Tetrad actually happened on 1967-1968. The war really occurred after the first Blood Moon of that tetrad in 1967.

Nathan Jones: And, of the eight Feast Tetrads, the first five fell on nothing of significance for the Jewish people.

Dr. Reagan: Nothing of significance — whatsoever! One out of eight is not very good odds.

Nathan Jones: I wouldn’t bet on them. No, I wouldn’t.

In the second segment of our study of the Blood Moon phenomenon, Dr. Reagan and I will look at what the Bible actually has to say about celestial signs.

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ABOUT AUTHOR View all posts Author Website

Dr. Nathan E. Jones

As the Internet Evangelist at Lamb & Lion Ministries, Nathan reaches out to the over 4.5 billion people accessible over the Internet with the Good News of Jesus Christ. He also co-hosts the ministry's television program Christ in Prophecy and podcast The Truth Will Set You Free.

10 CommentsLeave a Comment

  • Nathan: I am really interested in the Blood Moons. I have seen all of them this year, even got up in the middle of the night to peek out my window and see the large red moon. Tonight is supposed to be a blue moon, which is very rare too. (Once in a Blue Moon.) It will actually have a blue cast to it. I don't remember seeing these moons, red or blue as a child, they are awesome to me.

  • Yes, I would say the Blood Moons have more to do with Israel and the Jews, and their biblical history and events that happened to them down through the centuries. They are very interesting, I have seen all of them too, quite a sight in the sky, being blood red instead of a white and shining moon.

  • I believe that the "blood moons" are simply an astronomical event, with no influence on human events. Quite similar to meteors falling, comets, etc.
    I believe that when "the moon turns into blood", it will be a one-time, supernatural event, that will strike fear into persons viewing it. It will be seen by all people on the earth, not like a blood moon event, which is seen only by people on the earth who live in the viewing area of the eclipse. Think about it, a total eclipse is viewable in certain areas, and just for a short time. God's blood moon will be a fearful event, for the entire world!

  • "And God said, "Let there be lights in the vault of the sky to separate the day from the night, and let them serve as signs to mark sacred times [Mo'eds, same word as used for the feasts], and days and years," Gen 1:14

    The first tetrad happened at the crucifixion of Christ, the last one now. There has been a pattern of eclipses before and after the tetrads as well that has been largely overlooked, but verifiable through the NASA charts. The current eighth tetrad pattern spans eight years and contains 40 eclipses, all of them perfectly symmetrical to the tetrad midpoint, the Feast of Epiphany (aka the 12th day of Christmas). For the "First and the Last" to have established the courses of the sun and the moon to arrive at this astronomically unlikely arrangement, I'd say He has something planned. What it is, I'm not so sure about. See for details. Concentrate on the pretty graphics. Like Mark Biltz tends to do, the author gets a bit excited about assigning exact meanings to dates. All I know is if there are a bunch of ballons in the sky and big search lights sweeping back and forth, something is going on. Likewise when God has established unique events in the heavens. Which should be treated like road work ahead signs – pay attention, stay in the course, don't act like an idiot.

  • I'm very familiar with Mark Biltz's finding and sharing about the blood moon tetrads, past and future. I first heard it in 2008 and Mark Biltz has repeatedly cautioned against date-setting. Do some people still want to set dates, yes; but then he can't control that anymore than you can control those who take something you say and run way off with it.
    I've concluded that these tetrads are signs of significant events to/for/in Israel. What, I have no idea, but I'm watching the news. I'm not bothered by those who think differently, giving more or less significance to them. My comment is that I was disappointed at how the tone of the tv broadcast became one of ridicule directed at Mark Biltz and those who agree with him. As happens far too often Christians are guilty of trampling their own brethren. Is it too hard to simply say "I don't agree with this teaching because…., but I love him anyway", without chuckling with derision. We all receive so much grace from our Lord, we have more than enough to pass on to others.
    I am in-step with most of what comes forth from LambandLion, but don't doubt for one minute that when we get to heaven Jesus will have to set all of us straight on at least one thing or another. I'm sure he will be more perturbed about how we treated each other than whether the blood moon theory was right or wrong.

  • Do not the revealing of the Antichrist, 3rd Temple & its desecration all have to happen before the Return of Christ therefore return is not to be at least until 2022

  • We were reading Joshua 10. Israel was attacked by five kings who were trying to destroy the Jewish people as they were leaving the bondage of Egypt and making their way to the Promised Land. Joshua and Israel were winning the fight but they needed more daylight to defeat their enemies. Joshua spoke directly to the sun and asked it to Stand Still..and the sun obeyed. The sun stood still until the people of Israel had revenge on their enemies for an entire day. God has control over the sun and moon, he is the creator of all things, sun, moon, stars, day and night. I believe God will show more signs in the heavens and they will be significant for Israel as well.


    Take a step back from “throwing the baby out with the bath water”. Review the information at the referenced URL.

    September 23, 2017, the Rev. 12 sign will be in place in the heavens the day after Yom Teruah. Its a mystery to me as to its timing, yet it will be there. The big question is will the “Red Dragon” also be there. This sign points to the manifestation of Jesus. Which means the tribulation can’t be far off. And this also means that rapture could very well be “at the door”.


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