Vaticanus (B) preserves an early, conservative Septuagint and anchors Old Testament textual criticism alongside the Masoretic Text with exceptional reliability.
Treasures of the Vatican Library: A Study of the Codex Vaticanus and its Old Testament Text
Discover the significance of the Codex Vaticanus, one of the oldest nearly-complete copies of the Greek Bible housed in the Vatican Library. This 4th-century manuscript is invaluable for understanding the Old Testament text and has played a crucial role in modern textual criticism.

