The Bible does not say the a Earth is flat. People say the Bible says the Earth is flat for their own purposes. People twist and distort scripture to serve their own agenda. Make them prove ot and then show them from scripture that they are wrong.I've be asked if I think the earth is flat before, so I'm sure it will happen again. And when I have said no they say well the Bible says it is. I have always used the usual arguments that we all know, but!!!
I strongly believe in having integrity, if you try to con them in the park they see right through you very quickly. You have to be very sure of your positions and very loving when you speak. I've never tried to answer every question but I want to be able to answer the important ones.
I was, at the start, preparing to answer questions about space time and multiverses. Face it, our Copernican model has become a space time block with gazillions other evolving universes. Where do you put God into that mess? Cosmology today is used to deny God's existence.
--Dave
when you are evangelizing, don't let the conversation go to things like flat Earth and evolution. People like to argue those topics because Christians are notoriously bad at arguing them and they totally shut down the real reason you are there: to share the Gospel of the Christ. That is where you want to keep the conversation focused. Learn to do that and you will be a much more effective witness.