Strength in Numbers (and Age)

Most ancient works of literature survive on fewer than a dozen copies—there are nearly 15,000 manuscripts of the New Testament. Homer's Iliad comes in a distant second place, with 643 surviving manuscripts, and Plato's work squeaks by with only 7.
Also, most surviving manuscripts of other ancient works date 1,000 years or more from the original. The New Testament gap is an unusually short 25 years. The earliest undisputed manuscript—the John Reynolds fragment—was found in Egypt and has been dated between A.D. 117-138.

Norman L. Geisler, Frank Turek