Job Chapter 40:
The Fundies can't seem to figure out what creature this is, so they pretend that it's a dinosaur. The "tail moves like a cedar" line is their biggest "evidence".
Of course, there's nothing else in the bible, including the tale of Noah's ark, that comes close to mentioning a dinosaur.
My brother making this argument was the biggest catalyst in my burgeoning skepticism before I gave up believing. I kept saying to him, 'The bible mentions donkeys four hundred times but doesn't mention the largest, potentially most deadly animals to ever exist more than once?"
"And, lo, Moses and the tribes of Israel were lost in the desert for 40 years, driven by want, desperate from hunger and terrorized by constant velociraptor attacks."