Try this little conundrum in your Bible Study class: The Bible says that the Ark was made out of "gopher wood." Fine. So what does gopher wood look like? Where is it indigenous? Is it soft, hard, porous, what? Answer: gopher wood has never been identified. If the Ark was so large, then there must have been plenty of gopher wood around. Mesopotamia? No. Lebanon? No. Syria? Jordan? Sudan? Ethiopia? Egypt? No. No. No. No. And...no. No gopher wood. Period.
Well, we just have to take its existence on faith. Right?