So Boaz took Ruth, and she was his wife: and when he went in unto her, the LORD gave her conception, and she bare a son.

Wesley's Notes

4:13 Took Ruth - Which he might do, though she was a Moabite, because the prohibition against marrying such, is to be restrained to those who continue Heathens; whereas Ruth was a sincere proselyte and convert to the God of Israel. Thus he that forsakes all for Christ, shall find more than all with him.

Jamieson-Fausset-Brown Bible Commentary

Ru 4:13-18. She Bears Obed.

Matthew Henry's Concise Commentary

4:13-22 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, as 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 due time they should become one with his chosen people, and partake of his salvation. Prayer to God attended the marriage, and praise to him attended the birth of the child. What a pity it is that pious language should not be more used among Christians, or that it should be let fall into formality! Here is the descent of David from Ruth. And the period 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 treasures of gold, and frankincense, and myrrh to his feet. His name shall endure for ever, and all nations shall call Him blessed. In that Seed shall all the nations of the earth be blessed.