In the period of the judges, Elimelech, Naomi, and their sons leave Bethlehem because of a famine to sojourn in Moab (see map on ESV Study Bible p. 475). Naomi’s husband, Elimelech, dies there. Mahlon and Chilion, the sons, marry Moabite women, Ruth and Orpah. Ten years later the sons die too, leaving no children. Naomi is bereft of family (Ruth 1:1–5). Learning that the famine in Israel is over, she decides to return to Bethlehem; Orpah stays behind, but Ruth accompanies Naomi (Ruth 1:6–22). At harvest time, Ruth goes to glean in a field that happens to belong to Elimelech’s relative, Boaz (Ruth 2:1–23). Naomi knows he is an eligible kinsman-redeemer. Following Naomi’s daring plan, in a midnight encounter at the threshing floor Ruth boldly asks him, as a redeemer, to marry her (Ruth 3:1–18). After a closer kinsman refuses to take Ruth, Boaz redeems all the property of the deceased and marries Ruth (Ruth 4:1–12). They have a son, Obed, who becomes the grandfather of King David (Ruth 4:13–22).
Ruth’s words in the book (as compared with Naomi’s or Boaz’s) are surprisingly few; the story, however, hangs on them. Ruth expresses her lifelong commitment to Naomi, “May the Lord do so to me . . . if anything but death parts me from you” (Ruth 1:17), which takes her from Moab to Judah. She resolves to provide for Naomi (“Let me go . . . and glean,” Ruth 2:2), which brings her from Bethlehem to Boaz’s field. She invites Boaz to “spread your wings over your servant” (Ruth 3:9), which leads her from childless widowhood to marriage and motherhood (Ruth 4:13).