Despite contrary assertions, the fact of a spherical earth was clearly proclaimed in the Bible by the prophet Isaiah nearly twenty-eight centuries ago ... "It is He who sits above the circle of the earth, and its inhabitants are like grasshoppers [etc.]" Isaiah 40:22 (NKJ). When Isaiah wrote this verse he used the Hebrew word "khug" to describe the shape of the earth. Although this word is commonly translated into the English word "circle," the literal meaning of this word is "a sphere."
I found the above paragraph. Personally I believe the world is roughly the shape of a ball/sphere. And I believe in the Bible. When you look up the word khug it does supposedly mean sphericity or roundness. I don't ever remember seeing the Bible in Hebrew so I can't prove that this word "khug" was used but I believe that it probably was.