Jamieson, Fausset and Brown on Jude 1:22-23

22-23. None but those who "keep themselves" are likely to "save" others.

have compassion--So one oldest manuscript reads. But two oldest manuscripts, Vulgate, &c., read, "convict"; "reprove to their conviction"; "confute, so as to convince."

making a difference--The oldest manuscripts and versions read the accusative for the nominative, "when separating themselves" [Wahl], referring to Jude 19; or "when contending with you," as the Greek is translated, Jude 9.