SEV Biblia, Chapter 4:15 El cual será restaurador de tu alma, y el que sustentará tu vejez; pues que tu nuera, la cual te ama, le ha dado a luz; y ella te vale más que siete hijos.
John Gill's Bible Commentary Ver. 15. And he shall be unto thee a restorer of thy life , etc.] Of the joys, pleasures, and comforts of it, which she had been deprived of through the death of her husband and her two sons, ever since which she had lived a sorrowful life; all the comfort she had was from her daughter-in-law, and now a grandchild being born to her of her would be a means of restoring comfort to her mourning sorrowful spirit, and give her pleasure in those years in which she did not expect any: and a nourisher of thine old age ; that would when grown up feed her, support her, and supply her with all necessaries of life, being heir to a large and rich estate: for thy daughter in law which loveth thee ; Ruth the wife of Boaz, who had shown her love, in leaving her own country and kindred, to come along with her into a strange land, and who had laboured for her support in it, and still retained the same affection for her: which is better to thee than seven sons, hath borne him : either which had been so in the time of her widowhood, as the Targum; or rather which was so now, being the wife of so rich a person, and having now brought forth a son, heir to the estate, who would be more capable of doing for her than if she had seven sons living, having no other than their paternal estate.
Matthew Henry Commentary Verses 13-22 - Ruth bore a son, through whom thousands and myriads were born to God and in being the lineal ancestor of Christ, she was instrumental in the happiness of all that shall be saved by him; even of us Gentiles, a well as those of Jewish descent. She was a witness for God to the Gentile world, that he had not utterly forsaken them, but that in du time they should become one with his chosen people, and partake of his salvation. Prayer to God attended the marriage, and praise to his attended the birth of the child. What a pity it is that pious languag should not be more used among Christians, or that it should be let fal into formality! Here is the descent of David from Ruth. And the perio came when Bethlehem-Judah displayed greater wonders than those in the history of Ruth, when the outcast babe of another forlorn female of the same race appeared, controlling the counsels of the Roman master of the world, and drawing princes and wise men from the east, with treasure of gold, and frankincense, and myrrh to his feet. His name shall endur for ever, and all nations shall call Him blessed. In that Seed shal all the nations of the earth be blessed __________________________________________________________________
Original Hebrew והיה 1961 לך למשׁיב 7725 נפשׁ 5315 ולכלכל 3557 את 853 שׂיבתך 7872 כי 3588 כלתך 3618 אשׁר 834 אהבתך 157 ילדתו 3205 אשׁר 834 היא 1931 טובה 2896 לך משׁבעה 7651 בנים׃ 1121