Sola scriptura
Sola scriptura (Church Latin for 'by scripture alone') is a Christian theological doctrine held by most Protestant Christian denominations, in particular the Lutheran and Reformed traditions, that posits the Bible as the sole infallible source of authority for Christian faith and practice. Sola scriptura is a formal principle of many Protestant Christian denominations, and one of the five solae theorized in the early 20th Century, in attempts to characterize common ground in disparate Protestant theologies.