Definition of Sola Scriptura Sola Scriptura: the reformed Protestant belief that the Scriptures alone are the final and only infallible authority for the Christian. This does not mean that Scriptures are the only authority (nuda or solo Scriptura), as Protestants believe in the authority of tradition, reason, experience, and emotions to varying degrees (after all, “sola scriptura” itself is an authoritative tradition in Protestantism). It does mean that Scripture trumps all other authorities (it is the norma normans sed non normata Lat. “norm that norms which is not normed”). Scripture is the norma normans sed non normata “norm that norms which is...