None but those who “keep themselves” are likely to “save” others.
have compassion - So one oldest manuscript reads. But two oldest manuscripts, Vulgate, etc., 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 Jud 1:19; or “when contending with you,” as the Greek is translated, Jud 1:9.