Benjamin Chapman, author of Greek New Testament Insert, says this of Metzger’s Textual Commentary:
“One does not have to be a textual critic to benefit from the results of textual criticism. A Textual Commentary on the Greek New Testament, edited by Bruce M. Metzger, provides concise comments and explanations for the choices among variants made by the editorial committee that produced the United Bible Societies’ The Greek New Testament. The Textual Commentary is in plain English and requires no technical skills of its readers. Every interpreter should at least open this book to his text and read the few paragraphs there concerning whatever variants may be involved.”