Isaiah 40:22 says the earth is a circle. IF someone in the KJO camp actually told you the earth is flat --- then tell them to read Is. 40:22 ! { And/or if they know anyone who has served in The Navy / M.C. / Coast Guard ... ask them if they ever fell over the edge ... }
Isa. 40:22. It is he that sitteth upon the circle of the earth, and the inhabitants thereof are as grasshoppers; that stretcheth out the heavens as a curtain, and spreadeth them out as a tent to dwell in: (KJV)
Isa. 40:22. It is he who sits above the circle of the earth,
and its inhabitants are like grasshoppers;
who stretches out the heavens like a curtain,
and spreads them like a tent to live in; (NRSV)
This verse does NOT say that the earth is a circle! It says that the LORD sits upon the circle of the earththe dome over the flat earth that had, before the Genesis flood, separated the oceans from the mass of water above the dome:
Gen. 6:6. 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)
Notice also that the KJV fails to translate the poetical parts of Isaiah as poetry, but crudely translates all of it as prose!