What Scripture says
The Bible describes the earth in everyday and poetic language. It speaks of:
- “the four corners of the earth” (Isaiah 11:12, Revelation 7:1),
- “the ends of the earth” (Psalm 72:8, Job 38:13),
- the earth’s “pillars” (1 Samuel 2:8, Job 9:6),
- God “who sits above the circle of the earth” (Isaiah 40:22, ESV),
- God who “inscribed a circle on the face of the waters at the boundary between light and darkness” (Job 26:10),
- and God who “hangs the earth on nothing” (Job 26:7).
None of these passages is a lesson in geography. They are poetry, prophecy and praise. Each one says something about God: his rule reaches the farthest places, he set the world in order, and he holds it up.
Two passages are sometimes used to argue the Bible pictures a flat earth: a tree in a dream that could be seen “to the end of the whole earth” (Daniel 4:11), and Satan showing Jesus “all the kingdoms of the world” from a high mountain (Matthew 4:8). The first is a dream vision with symbolic meaning, as Daniel 4:20–22 explains. The second describes a temptation, likely a vision; no mountain shows even one kingdom in full.
What the evidence says
Context
Every language uses figures of speech that don’t describe the world literally. We still say “the four corners of the world” and “sunrise”, and no one thinks we believe the earth is square or the sun moves around us (see 2.2).
- “Four corners.” The Hebrew word kanaph means “wing”, “edge” or “extremity”. It is used for the corners of a garment (Numbers 15:38). “The four corners of the earth” meant the four directions, the farthest reaches of the world.
- “The ends of the earth” meant the most distant places people knew. When Jesus sends his disciples to “the end of the earth” (Acts 1:8), he means every nation, not a physical edge.
- “Pillars” appear in poems and songs (1 Samuel 2 is Hannah’s prayer). They express that God made the world stable. Job 26:7, a few chapters later in the same book, says God hangs the earth on nothing, so the writer clearly isn’t giving a literal engineering description in either place.
- “Circle.” The Hebrew khug in Isaiah 40:22 describes a round outline, like the horizon seen from above. Job 26:10 and Proverbs 8:27 use the same word for the horizon line. It doesn’t clearly mean a sphere, so it shouldn’t be oversold as a scientific prediction. The honest point is that the Bible uses the language of appearance: neither teaching modern astronomy in code nor teaching a flat disc.
Science
The earth is a sphere, slightly flattened at the poles. The evidence comes from many independent directions. Much of it can be checked without any special equipment.
Things anyone can observe
- Ships and the horizon. A ship sailing away disappears hull first, then the mast. From a beach with your eyes about 1.7 metres up, the horizon is only about 5 kilometres away. Climb higher and you see farther, because you are looking over the curve.
- Lunar eclipses. During a lunar eclipse, the earth’s shadow on the moon is always round, whatever the time of night and wherever the moon is in the sky. Aristotle pointed this out around 350 BC. A flat disc would sometimes cast an oval or a straight-edged shadow.
- Different stars in different places. The Pole Star (Polaris) sits higher in the sky the farther north you go; its angle above the horizon roughly equals your latitude. South of the equator it disappears entirely, and constellations like the Southern Cross appear instead. On a flat earth, everyone would see the same stars.
- Day and night, and time zones. When it is midday in London, it is early morning in New York and late evening in Sydney. The sun sets by sinking below the horizon, bottom first. That is what happens when the earth turns and your part of the globe faces away from the sun. A sun shining over a flat disc would never go below the horizon; it would just get smaller in the distance, and everyone would see it at once.
- Seasons reversed. December is summer in Australia and winter in Europe. In the Arctic summer, the sun doesn’t set for weeks, while the Antarctic is in constant darkness, and six months later it’s the other way round. Flat-earth maps usually show Antarctica as an ice wall around the rim of the disc. A rim tens of thousands of kilometres long can’t all have 24-hour daylight at the same time, yet that is what researchers in Antarctica experience in December.
Travel and engineering
- Flight paths. Airlines fly direct routes across the southern hemisphere, such as Santiago to Sydney, which takes about 13 hours over the Pacific. On the globe, the two cities are about 11,300 kilometres apart. On the most common flat-earth map (centred on the North Pole), the same two cities would be more than twice as far apart, and the flight would take well over a day. Long northern routes, such as New York to Tokyo, curve up over Alaska because that is the shortest path on a sphere (a great circle), even though it looks curved on a flat map.
- Circumnavigation. People have sailed and flown around the world since Ferdinand Magellan’s expedition (1519–1522), in every direction, including around Antarctica.
- Satellites. GPS works because satellites orbit a round earth at known positions. Satellite TV dishes point toward satellites above the equator: steeply upward near the equator, low toward the horizon at high latitudes, toward the south in the northern hemisphere and toward the north in the southern hemisphere. That pattern only works on a globe.
- Bridges. The towers of very long suspension bridges stand vertically, pointing to the earth’s centre, so they are slightly farther apart at the top than at the bottom. On England’s Humber Bridge, the difference is about 36 millimetres.
Measurement and photographs
- Eratosthenes. Around 240 BC, the Greek scholar Eratosthenes noticed that at noon on midsummer’s day the sun shone straight down a well in Syene (modern Aswan) but cast a shadow of about 7 degrees in Alexandria, to the north. From the angle and the distance between the cities, he estimated the earth’s circumference. Depending on the length of the unit he used, his figure was within roughly 2–15% of the true value of about 40,000 kilometres.
- Photographs from space. Astronauts photographed the whole earth from Apollo 17 in 1972 (the “Blue Marble”), and NASA’s EPIC camera, a million miles away, photographs the sunlit side every day. Every other planet and large moon we can see through a telescope is also a sphere, shaped by gravity pulling equally toward the centre.
Comparing the models
| Observation | On a globe | On a flat disc |
|---|---|---|
| Ships vanish hull first | Expected: they go over the curve | Not expected |
| Earth’s shadow in eclipses | Always round | Would sometimes be oval or straight |
| Pole Star invisible south of the equator | Expected | Not expected |
| Different times of day around the world | Expected: the earth turns | Hard to explain |
| 24-hour sun in Antarctica in December | Expected | Impossible on a rim |
| Santiago–Sydney in 13 hours | Matches the distance | Distance more than doubled |
History
The popular story that people before Columbus thought the world was flat is itself a myth.
- Ancient Greece. Pythagoras’s followers taught a round earth in the 500s BC. Aristotle gave observational arguments around 350 BC, and Eratosthenes measured it around 240 BC.
- The early and medieval church. Most Christian writers accepted a round earth. The English monk Bede described the earth as a globe in The Reckoning of Time (AD 725). Thomas Aquinas assumed it. The standard medieval astronomy textbook, Sacrobosco’s On the Sphere (c. 1230), taught it in universities for centuries. Medieval kings held a globus cruciger, an orb topped with a cross, as a symbol of Christ’s rule over the round world.
- Exceptions. A few writers, such as Lactantius (4th century) and Cosmas Indicopleustes (6th century), argued for a flat earth. They were outliers, and their views had little influence.
- Columbus. The debate before his voyage was about the earth’s size, not its shape. His critics were right that it was much bigger than he thought. The myth of a flat-earth church came from 19th-century writers, including Washington Irving’s romantic biography of Columbus (1828), and was spread by books that portrayed religion and science at war (see 1.6).
- The modern flat-earth movement began with Samuel Rowbotham in the 1800s, gained a society in 1956, and revived online in the 2010s. It is not a historic Christian position.
Where they meet
There is no conflict. The Bible speaks the way ordinary people speak, in poetry and the language of appearance. Science describes the shape of the earth. Reading poetry as a physics textbook is a mistake, whether made by a skeptic trying to discredit the Bible or a believer trying to defend a flat earth.
Christians shouldn’t tie the credibility of Scripture to a claim the evidence plainly refutes. Leading Christian scientists and ministries of every stripe, including young-earth creationists like Answers in Genesis, reject flat-earth claims.
What’s still open
Very little. Scholars discuss how ancient Israelites pictured the world, and some think they shared their neighbours’ idea of a flat earth under a dome (see 11.1). That is a question about ancient imagery and how much of it the biblical writers meant literally. It is not a question about what shape the earth is, or about what the Bible intends to teach.
Bottom line
No, the Bible doesn’t teach a flat earth. Phrases like “four corners” and “ends of the earth” are idioms. And the evidence that the earth is round is overwhelming: eclipses, stars, time zones, flight paths, satellites and photographs. Flat earth is simply false. This is rated Settled.