Under the ancient law, a “goel” or kinsman-redeemer was a near relative with the right and duty to avenge a murdered kinsman, buy back a relative’s lost land, and marry a childless widow to preserve the family line. Part one traces this pattern back to Judah and Tamar in Genesis 38, an uncomfortable episode in which Judah at first failed his duty, yet God still preserved the promised line through it, pointing to the greater Redeemer who would “ransom them from the power of the grave” (Hosea 13:14).
Part two follows Ruth and Boaz, where Boaz willingly takes up the kinsman-redeemer’s role, marries Ruth, and becomes an ancestor of David and, ultimately, of Christ. Naomi’s emptiness turns to fullness, and Israel’s own redemption from exile is likened to God’s covenant faithfulness. Jesus is presented as the true and better Kinsman Redeemer, born into this royal line to ransom his hopeless, perishing people at his own cost.