Composition & Redaction (Pre-2nd Century AD): The most significant changes occurred during the initial writing and editing of the biblical texts. Scholars indicate that texts were compiled, edited, and expanded over centuries, with, for example, shorter versions of the Book of Jeremiah appearing in earlier manuscripts compared to modern ones.

4th Century AD (Codex Development): Following the decriminalization of Christianity, the Bible shifted from scattered, individual scrolls to complete bound books (codices). This period included defining the canon (the list of books) and saw the production of the 4th-century Codex Sinaiticus, which differ from later, standard texts.

Translation & Revision (16th-19th Century): The Protestant Reformation and subsequent translations, such as the King James Bible, introduced changes through translation choices, errors (e.g., "Wicked Bible"), or revisions based on newly discovered, older manuscripts.

Modern Textual Criticism (19th-20th Century): The discovery of ancient manuscripts like the Dead Sea Scrolls led to significant modern revisions to ensure translations matched the oldest, most authoritative Greek, Hebrew, and Aramaic sources, notes this YouTube video.
YouTube
YouTube
+6