But all indications show that Jesus took those stories as literal. He refered to them specifically. So if those stories were not true then Jesus was perpetuating a lie.
That's perfectly silly.
If I reference something from "the Wizard of Oz" in a motivational speech, am I a liar?
What if I reference something from the "the Wizard of Oz" in trying to miotivate my 3 year old son, who has no idea that "the Wizard of Oz" is fiction? Am I a liar then?