In the days when the Judges ruled - “Judged.” This note of time, like that in Ruth 4:7; Judges 18:1; Judges 17:6, indicates that this Book was written after the rule of the judges had ceased. The genealogy Ruth 4:17-22 points to the time of David as the earliest when the Book of Ruth could have been written.
A famine - Caused probably by one of the hostile invasions recorded in the Book of Judges. Most of the Jewish commentators, from the mention of Bethlehem, and the resemblance of the names Boaz and Ibzan, refer this history to the judge Ibzan Judges 12:8, but without probability.
The country of Moab - Here, and in Ruth 1:2, Ruth 1:22; Ruth 4:3, literally, “the field” or “fields.” As the same word is elsewhere used of the territory of Moab, of the Amalekites, of Edom, and of the Philistines, it would seem to be a term pointedly used with reference to a foreign country, not the country of the speaker, or writer; and to have been specially applied to Moab.