Is the ending of the Gospel of Mark (16:9-20) original?

The longer ending (3), though current in a variety of witnesses, some of them ancient, must also be judged by internal evidence to be secondary. (a) The vocabulary and style of verses 9-20 are non-Markan. (e.g. απιστεω, βλαπτω, βεβαιοω, επακολουθεω, θεαομαι, μετα ταυτα, πορευομαι, συνεργεω, υστερον are found nowhere else in Mark; and θανασιμον and ... See more

A Commentary on the Holy Bible , edited by J.R. Dummelow (New York: MacMillan, 1927), pages 732-33.

9-20. Conclusion of the Gospel. One uncial manuscript gives a second termination to the Gospel as follows: 'And they reported all the things that had been commanded them briefly (or immediately) to the companions of Peter. And after this Jesus himsel... See more

Bruce Metzger, A Textual Commentary on the Greek New Testament (Stuttgart, 1971), pages 122-126.

16:9-20 The Ending(s) of Mark. Four endings of the Gospel according to Mark are current in the manuscripts. (1) The last twelve verses of the commonly received text of Mark are absent from the two oldest Greek manuscripts (א and B), from the Old Latin c... See more

The Westminster Study Edition of the Holy Bible (Philadelphia: Westminster Press, 1948).

vv. 9-20 . This section is a later addition; the original ending of Mark appears to have been lost. The best and oldest manuscripts of Mark end with ch. 16:8. Two endings were added very early.