I doubt that he's taking the book literally. It would be hard to follow the old testament to a T. (Maybe he's betting Pascal's Wager or having a spiritual life really does help him get through the rest of this irrational life's crazy times.)

As for geology, it's pretty evident that prophets that wrote the "Truth" millennia in the past probably didn't listen when the voices from on high droned on about plate tectonics and such.