How is this Religion different from all other Religions: How Judaism is an Evidence-based Faith

The Talmud declares that someone who rejects the legitimacy of the Written Torah as being written by Moses as per the dictation of the Almighty has no portion in the World to Come. If someone accepts the Torah at large but argues that a single verse is not Divine – they have no portion in the world to come. But do we accept the veracity of the Torah blindly? What proofs do we have to back up this lofty claim?