Aside from the numerous references to earth having four corners and a
foundation, apparently of pillars, the story in Mathew and Luke about
the devil taking Jesus to a very high mountain and showing him all the
kingdoms of the earth could only be true if the earth were flat. If the
writer knew it were round, then surely the story would have been that
the devil flew Jesus around the globe to show him all those kingdoms.
Revelations makes it clear the four corners description is not mere
poetic license by saying in 7:1
"And after these things I saw four angels standing
on the four corners of the earth, holding the four
winds of the earth, that the wind should not blow on
the earth, nor on the sea, nor on any tree."
If something is described as being upon a foundation of pillars, having
four corners, and being entirely visible from one high vantage point,
(which is situated upon the thing and not at a distance), then the thing
described is flat. It is obviously not spherical. To the best of my
knowledge, the Greeks had determined that the earth was probably round in the third century B.C. Frankly, I have found very little of use in any religious writing from that period, whether it be pagan, Jewish or Christian. I find them all unconvincing because of their scientific illiteracy.
I suppose some would chalk it all up to poetic license. But many believers say that they believe that every word in the bible is
literally true. It can't be literally true and the product of poetic license at the same time.
Believers who say that they believe the bible to be literally true are claiming to put their faith in a book written by a "god" who thought the Earth was flat. Those who claim poetic license are trying to have their cake and eat it too, because they do not claim that the entire bible is poetic. Only the parts they can't defend are poetic. It's an intellectually dishonest dodge. You can tell believers who refer to the bible for authority:
"Either you believe that the bible is the word of god, who happens to be ignorant of the fact that the world is round, or you're intellectually dishonest."