This redeemer was not Boaz, but the son just born. They called him a redeemer of Naomi, not because he would one day redeem the whole of Naomi's possessions (Carpzov, Rosenmüller, etc.), but because as the son of Ruth he was also the son of Naomi (Rth 4:17), and as such would take away the reproach of childlessness from her, would comfort her, and tend her in her old age, and thereby become her true goël, i.e., her deliverer (Bertheau). “And let his name be named in Israel,” i.e., let the boy acquire a celebrated name, one often mentioned in Israel.
Verse 15
Rth 4:15 “And may the boy come to thee a refresher of the soul, and a nourisher of thine old age; for thy daughter-in-law, who loveth thee (who hath left her family, her home, and her gods, out of love to thee), hath born him; she is better to thee than seven sons.” Seven, as the number of the works of God, is used to denote a large number of sons of a mother whom God has richly blessed with children (vid., 1Sa 2:5). A mother of so many sons was to be congratulated, inasmuch as she not only possessed in these sons a powerful support to her old age, but had the prospect of the permanent continuance of her family. Naomi, however, had a still more valuable treasure in her mother-in-law, inasmuch as through her the loss of her own sons had been supplied in her old age, and the prospect was now presented to her of becoming in her childless old age the tribe-mother of a numerous and flourishing family.
Verse 16
Rth 4:16
Naomi therefore adopted this grandson as her own child; she took the boy into her bosom, and became his nurse.
Verse 17
Rth 4:17
And the neighbours said, “A son is born to Naomi,” and gave him the name of Obed. This name was given to the boy (the context suggests this) evidently with reference to what he was to become to his grandmother. Obed, therefore, does not mean “servant of Jehovah” (Targum), but “the serving one,” as one who lived entirely for his grandmother, and would take care of her, and rejoice her heat (O. v. Gerlach, after Josephus, Ant. v. 9, 4). The last words of Rth 4:17, “he is the father of Jesse, the father of David,” show the object which the author kept in view in writing down these events, or composing the book itself. This conjecture is raised into a certainty by the genealogy which follows, and with which the book closes.
Verses 18-22
Rth 4:18-22
“These are the generations of Perez,” i.e., the families descended from Perez in their genealogical order (toledoth: see at Gen 2:4). The genealogy only goes back as far as Perez, because he was the founder of the family of Judah which was named after him (Num 26:20), and to which Elimelech and Boaz belonged.
