Luke 17:18 - Ellicott's Commentary On The Whole Bible

Save this stranger. — The word for “stranger” means literally, a man of another race, an alien. It is not found elsewhere in the New Testament, but is used in the LXX. of Isaiah 56:3. It was probably a term of contempt in common use among the Jews. (Comp. the kindred word “aliens,” with special reference to the Philistines, in Hebrews 11:34, and “one of another nation” in Acts 10:28.) It implied, as did the whole treatment of the Samaritans by the Jews. that the former were not recognised as being, in any sense, children of Abraham.