Skeptics will assume from these verses a concept of a flat, circular, pancake-like earth. In each case, the Hebrew word here is exactly the same: chuwg.

And here is where we alert the reader to another key word-concept that is missing in Hebrew: There was no varying word for a "sphere" - a three-dimensional circle. It is not that the Hebrews or anyone else lacked the concept of sphericity, but that they simply did not create a second word for it. Ancient languages had only a few thousand words at most.

It is not even clear that chuwg refers exclusively to the shape we call a circle. The word indicates boundaries being set, but nothing contextually demands a perfect circular shape. In Job 22:14, it refers to a "circuit" or route walked by God, and there's no particular reason why this should or should not be a circle. Altogether, the word is used only 3 times in the OT, and not once does the context clearly demand a shape of any particular regularity.

We may add the "earth" in Isaiah 40:22 is erets. Isaiah's reference should be understood to refer to the oikoumene, or the shoreline of the day, not the "whole" earth. The language used was equivocal and inspired to be so used.