Job 26:
7 He stretcheth out the north over the empty place, and hang Earth the earth upon nothing.
Isaiah 40:22 He sits enthroned above the circle of the earth....ends of ts
But a flat Earth would still have to hang somewhere*, so the quote from Job doesn't say anything about the shape of it, and circles are not spheres.
Moreover, though, those books were written describing the post Genesis Earth, after God rolled it up into a ball to make its current shape.
1. There were no 900 year old men on the ark.
That's true, but I'm not sure it really changes my point. I could have said "a 600 year old man who would end up living another 300 years", but the point is that in order for that to happen, things would have to be very, very, different than they are today.
3. You are certain it was gopher wood when even the translators who are experts in the language are uncertain.
I'm just going by the langauge of the King James Bible. If it was good enough for Matthew, Mark, Luke, and John, it's good enough for me.
Where in the Bible does it say that the flood waters vanished never to be seen again?
So, where are they? Do the math. All the aquifers in the world aren't big enough to hold it, unless you are asserting the existince of some truly amazingly large underground seas down there in the Earth, mixed in with all the magma. I haven't discussed this theory with any physicists, but I suspect they would have issues with it.
Of course, world geography could have been different back then. The mountains might not have been as tall, or the oceans as deep. The extent of dry land in Noah's day might have been much smaller, so less additional water was needed. In this theory, God releases all the water from above the dome of the sky, which is enough to flood all the existing dry land. Then, he raises the mountains higher and digs deeper valleys and ocean trenches, causing the land to reappear above the surface of the water. This is certainly plausible, and solves a real problem with the flood narrative. Most of the time when water recedes, it either drains to a lower place, as when a river in flood gradually sends the water down to the ocean, or it evaporates. However, with the worldwide flood, there was no lower place, and any evaporation would just fall back to Earth as rain. The apparent recession may simply have been the result of divine reshaping of the land to lower the level of ocean trenches to store all the water.
Of course, another possibility is that God let the water flow over the edge of the world until enough had vanished, and then He rolled the Earth into a ball when there was just the right amount of water left.
*unless it's elephants all the way down.