What is "bibliothek"

Old English biblioðece "the Scriptures," from Latin bibliotheka "library, room for books; collection of books," from Greek bibliotheke, literally "book-repository" (from biblion, see Bible, + theke "case, chest, sheath," from root of tithenai "to put, place;" see theme), used of the Bible by Jerome and serving as the common Latin word for it until Biblia began to displace it 9c.