The three manuscript powerhouses behind the modern Bible are Sinaiticus, Vaticanus and Alexandrinus. Like Sinaiticus, the Vaticanus codex dates to the 4th century, with Alexandrinus transcribed 100 years later. Vaticanus was preserved and overwritten in the 15th century. Alexandrinus may be the best preserved. But only Sinaiticus has the prized complete New Testament. The books' different ordering, contents and appearances again testify to the Bible's evolutionary history.