The CPH Blog has literally hundreds of in-depth articles on NT and OT Textual Studies, to this Dr. Don Wilkins asks, "So what?" He parroting what some readers might be thinking, "So what?" Herein he answers his question.
UNINTENTIONAL ERRORS: The necessity of Textual Criticism
Textual criticism concerns itself with the problems suggested by various kinds of errors. textual evidence is so vast—exceeding that of any other literature, as has been seen—that two results follow: Since the copying by hand of any document of appreciable length almost inevitably involves change and error, many textual errors and variants will be found in this great quantity of MSS.
Introduction to the Dead Sea Scrolls
The earliest MS evidence available for the OT text is also the most recently discovered. Since 1947 thousands of fragments of MSS, both biblical and nonbiblical, have come to light in the Dead Sea region.