What does Romans 16:24 mean?

Many translations exclude this verse altogether, skipping from verse 23 to verse 25. It simply repeats Paul's blessing in the second half of verse 20, "The grace of our Lord Jesus Christ be with you all. Amen."

Bible scholars are continually seeking to build the most accurate representation of the very first manuscripts of the Scriptural books. Conservative Christians understand these letters to have been inspired by God in their original form (2 Timothy 3:16). Those manuscripts were carefully preserved by scribes copying them down, word for word, over the centuries.

Occasionally, archeologists uncover earlier versions of those copied manuscripts, written more closely to the very first writing of the Word. Two things have come from this. One, it is incredibly clear how extremely faithful the Bible we have today is to the very first manuscripts. Differences that have been found are minor and do not change our understanding of any of the essential truths of God's Word. Two, when the earliest manuscripts consistently show something different than later versions, Bible scholars adjust their translations to reflect that.

In the case of Romans 16:24, most earlier manuscripts, discovered some time after chapter and verse numbers were applied to Romans, simply do not contain it. Therefore, it is generally removed from the final translation.