Of course belief in the Bible is an issue here. If it were not, we'd agree on some basic issues. After all, remember what your predecessor said (A. Einstein) about the Bible. He agrees with you. Therefore, in your reality, God does not enter the picture. But let's go back to your first few statements there. Before I even examine your contentions as to the unreality of the Bible, would you say even "round-earthers" or evolutionists sans belief in God might use the expression, "four corners of the earth," yet knowing that the earth is round? (round-ish, that is. I'm not sure if it's a perfect circle, whatever that may be, but from the looks of things, it sure looks like a circular circumferance.)
The expression "four corners" at Revelation 7:1 is obviously symbolic. If you think a person, anyone, should take it literally, well, best to you, sir. Here is what it says (related to John in a vision): "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." Again, if you think I think or anyone thinks it is to be understood literally, as I said -- (in other words) -- have a nice day, sir.