The bible describes the earth as unmoveable (stationary) Just like the Flat Earth (FE) Model, as a circle which is a flat object (Isaiah knew what a sphere was and uses the word for sphere/ball in a previous chapter but the word for a flat 2D circle in 40:22) just like the FE model, the Bible describes the earth as covered by a dome called a firmament just as other nations around that time which had a flat earth model also believed in. With windows in the firmament which let in the waters Just like the FE model. The Sun, moon, and stars were all stuck inside of this firmament Like the FE model. The stars were tiny and could fall to earth and even make war with the inhabitants of the earth (just like in the FE model the stars are small and close to us). The earth was established upon pillars (again, just like the FE model). The moon is described as a light in the bible just like the FE model.
All these claims and many more fly in the face of modern science. It is clear that the people writing this had no idea what the universe was and of our place in it, let alone the shape of our planet. We know what the shape of the earth is and the bible had it dead wrong. Why do you think most FE believers are also Christian. They have been correct in their interpretations of the biblical passages. Mind you there are a couple passages which are in the book that are not in accordance with this very old model of a flat earth but that just goes to show it was written by several people with varying contradictory ideas rather than by some all-knowing being.
Every single part of this image has scriptural references to back it up. Except there is also the Throne of God directly above the waters which are above the firmament according to the scriptures. This is in your own book, do not take my word for it, research it yourself.