"God had already told them that the earth was a CIRCLE in Isaiah 40:22: "It is he that sitteth upon the circle of the earth..."
...and yet, the ancient Greeks had mathematically proved that the Earth was spherical way before the Bible was written. So indeed, who are the foolish ones now?!
And mathematically, 'Circle' does not equate with Sphere; but then, even your supposedly 'Omniscient' God didn't know that Pi = 3.141592...
Yet, the ancient Greeks had calculated Pi to 75 decimal places before the Bible had been written. Pi to just 39 decimal places can describe a perfect circle the size of our observable universe.
PROTIP: One of the languages used in the writing of the Bible? Greek; along with Hebrew & Aramaic. Can you say 'Mistranslation'? I know you can. Example: the Hebrew 'Sheol' =/= Hell. So there's your 'Revenge Fantasy' destroyed, o fundies.