What Was Manna in the Bible? The Scale of This Miracle Will Stop You Cold

For centuries, scholars, theologians, and scientists have asked what manna was in the Bible. That mysterious food God provided to the Israelites in the desert. According to Scripture, manna sustained a massive number of people for forty years as they journeyed from Egypt to the Promised Land, a daily provision unlike anything they had ever seen.

While the Bible describes it as “bread” from heaven, historians and scientists have suggested various possible natural sources. In exploring manna, we can examine the Biblical text and natural explanations, all while marveling at the miracle at the heart of this story.

“Behold, I will rain bread from the sky for you, and the people shall go out and gather a day’s portion every day,” Exodus 16:4

Biblical Descriptions of Manna

Psalm 78:24 calls manna the “grain of heaven,” and the Hebrew word there, dagan, does mean grain or cereal. But that Psalm is poetry; in the same breath it also calls manna “bread of angels,” a name for the finest heavenly food, not a botanical description. The stronger clue that manna behaved as grain comes from how the Israelites handled it: they gathered it, ground it, and baked it into cakes, the way you would a cereal.

• “like coriander seed, and it looked like bdellium” Numbers 11:7–8

• “was like coriander seed, white; and its taste was like wafers with honey.” Exodus 16:31

• “was a small round thing, small as the frost on the ground.” Exodus 16:14

  
  

And it appeared daily, except on the Sabbath. Any leftover manna would spoil, except on the sixth day, when God preserved it for the Sabbath. Exodus 16:19–30. Scholars and scientists have proposed several natural sources for manna, each consistent with desert environments.

• The digestive byproduct of insects that feed on the sap of the Haloxylon salicornicum shrub (yup, you read that right), identified in the Sinai by botanist Avinoam Danin, who later questioned whether the link to biblical manna was ancient or borrowed. ³

  
  

• A sweet secretion from the tamarisk tree, known in old Persian sources as taranjabin, “wet honey.” ³ 

  
  

• A desert lichen, Lecanora esculenta, gathered & baked into bread by desert nomads. ⁴

  
  

Why It Was Divine No Matter The Origin

It doesn’t matter which of these, if any, turns out to be right. The miracle was never in what manna was made of. It was in how it came. Daily, reliably, on a schedule, in quantities no desert could supply, for four decades. God can and will use the natural world to keep His promises. Finding a natural mechanism wouldn’t explain the miracle away; it would only show us the means He used. What no natural source can account for is the pattern.

A Remarkable Detail

Let’s start with the strangest part. Manna behaved differently depending on the day of the week. Kept overnight, it rotted. Yet the batch gathered on the sixth day stayed fresh through the seventh, so the Israelites could keep the Sabbath.

“but some of them left of it until the morning, so it bred worms and became foul; and Moses was angry with them.” Exodus 16:20

“They laid it up until the morning, as Moses ordered, and it didn’t become foul, and there were no worms in it.” Exodus 16:24

Sap does not know what day it is. A secretion, a fungus, an insect byproduct — none of them runs a calendar app and changes its chemistry. The same food spoiling on one night and keeping on another, in step with the Sabbath, is the detail no natural candidate can do, let alone for 40 years straight. The manna did not merely appear; it appeared with purpose, timing, and provision built into it.

The Sheer Volume of Manna

The sheer volume is staggering too, though the volume is almost the least of it. In Exodus 12:37, we learn that “about six hundred thousand on foot who were men, in addition to children” left Egypt with Moses. Six hundred thousand men alone would fill Michigan Stadium, the largest football stadium in the United States, about five to six times over. 

Counting women and children, many scholars estimate the total nearer to two million people. (That number is up for debate, though, since some scholars take the Hebrew word for “thousand” to mean a clan or unit rather than a literal thousand.) Two million is the number I’ll use here, but it is an estimate, not an absolute.

In Exodus 16:16, each person gathered one omer per day. An omer is a Hebrew dry measure; the Jewish Study Bible puts it at roughly 2.3 liters (which, depending on manna’s density, is somewhere around 2.4 to 3.9 pounds; a rough sense of scale, since no one knows what manna actually weighed).

If the population approached two million, that is roughly 4 to 6 million liters of food every single day. Manna fell six days a week, not on the Sabbath, which over forty years comes to about 12,500 days of collection. Even on conservative estimates, that is over 25 billion individual daily portions, and something on the order of 57 billion liters of food, appearing day after day in a harsh desert.

But notice what still resists explanation here. It isn’t the size. A large quantity of a natural substance is still natural; big is not the same as supernatural. 

What no natural process matches is the combination — that volume, arriving on that schedule, in that fixed and barren region, pausing every seventh day, for forty years. The size is what makes your eyes pop, but the schedule is what makes it a miracle.

Faith Meets Inquiry

Strip all those numbers away and what remains? A people who could not feed themselves were fed, every morning, for a generation, by something that kept perfect time with the day God set apart. 

We can chase the natural explanations, and we should; it’s genuinely fun to look into. But the chase is not a threat to the miracle. God provided daily, reliably, and miraculously, for forty years, in a way science or history alone cannot account for. God’s hand was unmistakably at work. The lesson is simple: God will provide, and we are called to trust and obey Him.

© Jane Isley

Sources:

Scripture quotations are from the World English Bible (WEB).

³ Vered Guttman, “Manna Is Real and Not So Heavenly,” Moment Magazine, Winter 2019. https://momentmag.com/manna-is-real-and-not-so-heavenly/ — for the Haloxylon insect honeydew (Avinoam Danin) and the tamarisk taranjabin secretion.

⁴ Heino Lepp, “Manna Lichens,” Australian National Botanic Gardens. https://www.anbg.gov.au/lichen/case-studies/manna-lichens.html — for the desert lichen Lecanora esculenta.

Also referenced:

Scripture: Exodus 16:1–36; Numbers 11:7–9; Exodus 12:37; Joshua 5:12; Psalm 78:24 

Omer measurement: “What Is an Omer?” ChristianAnswers.net.

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