Mary, the mother of Jesus, is one of the most important women in the Quran, as she is the only one identified by name. Her name not only appears far more in the Quran than in the New Testament, but it is also the title of Sura 19, which discusses the annunciation, Jesus's birth and Jesus's first words, spoken before birth and in the cradle—"most other personal names used as titles of Quranic chapters are those of prophets." A hadith claims that Mary was consecrated to God, thus "escaping the pricking of the devil" at birth; this is said "to have played a role in the formation of the later Islamic doctrine of prophetic "isma"" (innate quality of 'impeccability', 'immunity from sin and error' of prophets).