This thread is not about the Ten Commandmentsit is about the flat earth with four corners that is described in the Bible. Ancient Hebrew cosmology expressly teaches that the earth is flat and covered with a dome, and that teaching is expressly taught in the Bible.
ויעשׂ אלהים את־הרקיע ויבדל בין המים אשׁר מתחת לרקיע ובין המים אשׁר מעל לרקיע ויהי־כן׃ Gen. 1:7
Gen. 1:7. So God made the dome and separated the waters that were under the dome from the waters that were above the dome. And it was so.
The NRSV correctly translates the Hebrew word רָקִיעַ (râqı̂ya‛
as dome. The evidence for the correctness of this translation is found in the use of this word in ancient Hebrew literature. Based upon this usage, the Hebrew and English Lexicon of the Old Testament by Brown, Driver, and Briggs published by Oxford University gives us the following meaning of it in Gen. 1:7, the vault of heaven, or firmament, regarded by Hebrews as solid, and supporting waters above it. (p. 956)
According to ancient Hebrew cosmology based upon Genesis, Job, Isaiah, Ezekiel, and other books in the Old Testament, the universe is composed of three parts.
The heavens (Hebrew = שָׁמַיִם [shâmayim]) above,
The earth (Hebrew = אֶרֶץ [eh'-rets]) in the middle
The world of the dead (Hebrew שְׁאוֹל [sheh-ole'] below
For a diagram of this universe, and much more information from Christian scholars, please see here,
A COMMON COSMOLOGY OF THE ANCIENT WORLD
The story of the Genesis flood is dependent upon this cosmology:
Gen. 1:6. And God said, Let there be a dome in the midst of the waters, and let it separate the waters from the waters.
7. So God made the dome and separated the waters that were under the dome from the waters that were above the dome. And it was so.
8. God called the dome Sky. And there was evening and there was morning, the second day.
9. And God said, Let the waters under the sky be gathered together into one place, and let the dry land appear. And it was so.
10. God called the dry land Earth, and the waters that were gathered together he called Seas. And God saw that it was good. (NRSV)
Gen. 7:11. In the six hundredth year of Noah's life, in the second month, on the seventeenth day of the month, on that day all the fountains of the great deep burst forth, and the windows of the heavens were opened.
12. The rain fell on the earth forty days and forty nights. (NRSV)
Moreover, only a flat earth has four corners:
Isa. 11:12. He will raise a signal for the nations,
and will assemble the outcasts of Israel,
and gather the dispersed of Judah
from the four corners of the earth. (NRSV)
Rev.7:1. After this I saw four angels standing at the four corners of the earth, holding back the four winds of the earth so that no wind could blow on earth or sea or against any tree. (NRSV)
The literal four corners of the earth in the Bible gave rise to todays popular expression.
Furthermore, Jesus was able to see all the kingdoms of the world from a very high mountain. This would have been impossible on a spherical earth:
Matt. 4:8. Again, the devil took him to a very high mountain and showed him all the kingdoms of the world and their splendor; (NRSV)