Context: Ruth is one of the most literarily sophisticated and theologically rich books of the OT — a historical novella of just four chapters set in the days of the judges. It tells the story of Naomi, an Israelite widow who returns from Moab with her daughter-in-law Ruth, a Moabite who chose the God of Israel with her famous declaration of loyalty (1:16–17).

The central concept — the go'el: The "kinsman-redeemer" bears the obligation to rescue a family member in need — by purchasing property or by marrying the widow to perpetuate the deceased's name (levirate). Boaz, a wealthy relative of Naomi, acts as go'el by marrying Ruth and redeeming the property, restoring both women to dignity and family continuity. Every detail is theologically crafted: providence is visible in the impossibility of the "coincidences."

Messianic relevance: The closing genealogy reveals that Ruth and Boaz are great-grandparents of King David — and thus direct ancestors of Jesus (Matt 1:5). Boaz as willing redeemer who pays the price to rescue a foreigner is one of the richest typological images of Christ in the OT. The book also demonstrates that divine grace always transcended Israel's ethnic boundaries.