The Bible does not claim the Earth is flat - you need to read it more before you quote it maybe?
Also it is an historic document of the utmost reliability. Some folks think the 2 geneolgies in the NT that don’t agree are a major blunder, but with a little study you will find one is the ancestry of Joseph and the other is of Mary.
It’s things like that that can continue to bolster one’s faith in the word being absolute and true. Ever read up on the dead sea scrolls - another amazing historical find confirming the absolute truth found in the Bible.
So what about Quirinius and Herod?
I said that we have as much evidence that the world is not 6,000 years old as we had that the world is not flat. Therefore [very very small bit of intelligence has to be applied on your part, and I understand that is a great deal to expect, but ...] arguing that the world is 6,000 years old is the same thing as saying it is flat.
It's called an analogy. They're even used in the Bible.