Well, the problems comes when you attempt to take any of the bible as not allegory/metaphor. For example, was the entire resurrection story an allegory and of what exactly? What "truth" does it tell us if it didn't actually happen? How is this "truth" different than the "truths" of any other work of fiction? The entire episode could be taken for rebirth/renewal/springtime/whatever - not exactly the transcendent knowledge of the universe.
Another objection is, many theists use the metaphor/allegory approach as an escape hatch to pick and choose which portions to accept (the parts they like) and which portions to assign to metaphor (the parts that are heinous/ridiculous or contradicted directly by science). Not exactly a rigorous approach to determining "truth".
Another objection is, many theists use the metaphor/allegory approach as an escape hatch to pick and choose which portions to accept (the parts they like) and which portions to assign to metaphor (the parts that are heinous/ridiculous or contradicted directly by science). Not exactly a rigorous approach to determining "truth".
