Ruth
As a kinship term it denotes the near relative who is responsible for the economic well-being of a relative, and he comes into play especially when the relative is in distress and cannot get himself/herself out of the crisis. The Scriptures note five aspects of a gōʾēl’s redemptive role: (1) to ensure that the hereditary property of the clan never passes out of the clan (Lev 25:25–30); (2) to maintain the freedom of individuals within the clan by buying back those who have sold themselves into slavery because of poverty (Lev 25:47–55); (3) to track down and execute murderers of near relatives (Num 35:12, 19–27); (4) to receive restitution money on behalf of a deceased victim of a crime (Num 5:8); and (5) to ensure that justice is served in a lawsuit involving a relative (Job 19:25; Ps 119:154; Jer 50:34). The Israelite provision for the gōʾēl is based upon an assumption of corporate solidarity and the sanctity of the family/clan: to offend a relative is to offend oneself. The custom of redemption was designed to maintain the wholeness and health of family relationships, even after the person has died.
To tie together the loose thematic strands, we may summarize the practical and theological lessons as follows:
1. God will not let his promises to Israel and Judah and David die.
2. God works in a mysterious way his wonders to perform and his goals to achieve.
3. In all things God works for the good of those who love him and are called according to his purpose (Rom 8:28).
4. Genuine piety is expressed primarily in devotion, sensitivity, grace, and kindness toward others and openness to the working of God.
5. God’s grace knows no boundaries. Even a despised Moabitess is incorporated into the nation of Israel. In fact, the royal [and Messianic!] line has Moabite blood in its veins.