Pastor Paul Rogers preached on how Boaz was the kinsman redeemer for Ruth.
There is a contrast of Boaz with the other kinsman who wants the land but not the obligations that go with Ruth’s hand in marriage. Boaz knows the Law and uses it well, but goes beyond the letter of the law to the spirit of it, acting in Ruth, Naomi and the clan’s interest, not his own. He ensures Ruth is fully welcomed into the nation of Israel (vv11-12). As Christ had no need to give up his rights for our sake, so we should live lives of love which go beyond obligation to self-sacrificial love. Christ perfectly fulfilled the Law, so we are now freed from its restrictions to live by the Spirit and the law of love (Galatians 5).