Gospel of Thomas in the late 2nd century that "since there are four quarters of the earth ... it is fitting that the church should have four pillars ... the four Gospels" ("Against Heresies", 3.11.8), and then shortly thereafter made the first known quotation from a fourth gospel—the canonical version of the Gospel of John. The late 2nd-century Muratorian fragment also recognizes only the three synoptic gospels and John. Bible scholar Bruce Metzger wrote regarding the formation of the New Testament canon, "Although the fringes of the emerging canon remained unsettled for generations, a high degree of unanimity concerning the greater part of
New Testament apocrypha and produce new translations. The texts of the Nag Hammadi library are often considered separately but the current edition of Schneemelcher also contains eleven Nag Hammadi texts. Books that are known objectively not to have existed in antiquity are usually not considered part of the New Testament Apocrypha. Among these are the Libellus de Nativitate Sanctae Mariae (also called the "Nativity of Mary") and the Latin Infancy gospel. The latter two did not exist in antiquity, and they seem to be based on the earlier Infancy gospels. Four gospels came to be accepted as part of the New Testament canon.