The English word Bible is from the Latin biblia, from the same word in Medieval Latin and Late Latin and ultimately from Koinē Greek: τὰ βιβλία, translit. ta biblia "the books" (singular βιβλίον, biblion).
Medieval Latin biblia is short for biblia sacra "holy book", while biblia in Greek and Late Latin is neuter plural (gen. bibliorum). It gradually came to be regarded as a feminine singular noun (biblia, gen. bibliae) in medieval Latin, and so the word was loaned as a singular into the vernaculars of Western Europe.
Latin biblia sacra "holy books" translates Greek τὰ βιβλία τὰ ἅγια tà biblía tà ágia, "the holy books".
The word βιβλίον itself had the literal meaning of "paper" or "scroll" and came to be used as the ordinary word for "book".
It is the diminutive of βύβλος byblos, "Egyptian papyrus", possibly so called from the name of the Phoenician sea port Byblos (also known as Gebal) from whence Egyptian papyrus was exported to Greece.
The Greek ta biblia (lit. "little papyrus books") was "an expression Hellenistic Jews used to describe their sacred books (the Septuagint). Christian use of the term can be traced to c. 223 CE. The biblical scholar F.F. Bruce notes that Chrysostom appears to be the first writer (in his Homilies on Matthew, delivered between 386 and 388) to use the Greek phrase ta biblia ("the books") to describe both the Old and New Testaments together.
By the 2nd century BCE, Jewish groups began calling the books of the Bible the "scriptures" and they referred to them as "holy", or in Hebrew כִּתְבֵי הַקֹּדֶשׁ (Kitvei hakkodesh), and Christians now commonly call the Old and New Testaments of the Christian Bible "The Holy Bible" (in Greek τὰ βιβλία τὰ ἅγια, tà biblía tà ágia) or "the Holy Scriptures" (η Αγία Γραφή, e Agía Graphḗ). The Bible was divided into chapters in the 13th century by Stephen Langton and it was divided into verses in the 16th century by French printer Robert Estienne and is now usually cited by book, chapter, and verse. The division of the Hebrew Bible into verses is based on the sof passuk cantillation mark used by the 10th-century Masoretes to record the verse divisions used in earlier oral traditions.
The oldest extant copy of a complete Bible is an early 4th-century parchment book preserved in the Vatican Library, and it is known as the Codex Vaticanus. The oldest copy of the Tanakh in Hebrew and Aramaic dates from the 10th century CE. The oldest copy of a complete Latin (Vulgate) Bible is the Codex Amiatinus, dating from the 8th century.