wasnt it written in greek and latin?
edit: from wikipedia:
Probably, the books of the New Testament were written in Koine Greek, the language of the earliest extant manuscripts, even though some authors often included translations from Hebrew and Aramaic texts. Certainly the Pauline Epistles were written in Greek for Greek-speaking audiences. See Greek primacy. Some scholars believe that some books of the Greek New Testament (in particular, the Gospel of Matthew) are actually translations of a Hebrew or Aramaic original. Of these, a small number accept the Syriac Peshitta as representative of the original. See Aramaic primacy.
Koine Greek (kini) (Κοινὴ Ἑλληνική, "common Greek", or ἡ κοινὴ διάλεκτος, "the common dialect") is the popular form of Greek which emerged in post-classical antiquity (c.300 BC – AD 300), and marks the third period in the history of the Greek language
Aramaic primacy is the view that the Christian New Testament and/or its sources were originally written in the Aramaic language. Aramaic Primacy is asserted over and against Greek Primacy, as is generally accepted, and Hebrew primacy.
Mainstream and modern scholars have generally had a strong agreement that the New Testament was written in Greek. They acknowledge that many individual sayings of Jesus as found in the Gospels are translations from oral Aramaic, but hold that the Gospels' text in its current form was composed in Greek, and so were the other New Testament writings. Scholars of all stripes have had to acknowledge the presence in the Gospel of Mark of scattered, but only occasional, Aramaic expressions, transliterated and then translated.
Since non-literary, simple Greek knowledge or competency in multiple languages was relatively widespread in Jewish Palestine including Galilee, and a Greek-speaking community had already developed in Jerusalem shortly after Easter, one can assume that this linguistic transformation [from "the Aramaic native language of Jesus" to "the Greek Gospels"] began very early. ... [M]issionaries, above all 'Hellenists' driven out of Jerusalem, soon preached their message in the Greek language. We find them in Damascus as early as AD 32 or 33. A certain percentage of Jesus' earliest followers were presumably bilingual and could therefore report, at least in simple Greek, what had been heard and seen. This probably applies to Cephas/Peter, Andrew, Philip or John. Mark, too, who was better educated in Jerusalem than the Galilean fishermen, belonged to this milieu. The great number of phonetically correct Aramaisms and his knowledge of the conditions in Jewish Palestine compel us to assume a Palestinian Jewish-Christian author. Also, the author's Aramaic native language is still discernible in the Marcan style
Currently, 1,600 Jewish epitaphs (funerary inscriptions) are extant from ancient Palestine dating from 300 B.C. to 500 A.D. Approximately 70 percent are in Greek, about 12 percent are in Latin, and only 18 percent are in Hebrew or Aramaic.
"In Jerusalem itself about 40 percent of the Jewish inscriptions from the first century period (before 70 C.E.) are in Greek. We may assume that most Jewish Jerusalemites who saw the inscriptions in situ were able to read them"
so i guess we cant be sure, but its most likely big parts were written in greek, except for maybe the book of mark