Ruth makes herself known to Boaz and acknowledges him as the kinsman on the threshing floor. Then we read Boaz’s response: he promises Ruth that he will do what is necessary and that she can rest in it. This points to how God, under the new covenant, allows Israel to rest in His promises.
Ruth 3
10 And he said, “Blessed be you of the LORD, my daughter! You have made your latter goodness better than your former, by not going after chosen young men, whether poor or rich.
11 And now, my daughter, do not fear. I will do for you all that you say, for all the gates of my people know that you are a valiant woman.
12 And now, it is true that I am a kinsman, but there is a kinsman closer than I.
13 Spend the night tonight, and in the morning it will be done. If he will redeem you, it is acceptable. But if he is not willing to redeem you, then I will redeem you, as surely as the LORD lives. Lie down until the morning.
14 And she lay at his feet until the morning. And she arose before one man could recognize another. And he said, Let it not be known that the woman came to the threshing floor.
My daughter
In the prophecies of the future, we find many times that God calls Israel the daughter of Zion (Isaiah 62:11; Zeph. 3:14; Zech. 2:8-10). This expression is used to address Jerusalem, and thus the entire nation of Israel, in a loving way, like a father addressing his beloved daughter.
Reading and believing
Boaz says that Ruth’s last act of kindness (other translations say: love (act), faithfulness) has been better than her first. Ruth’s first act was working in Boaz’s field and gleaning, symbolizing Israel’s coming to read God’s word. The second is recognizing Boaz as a redeemer. By reading and believing God’s word (2 Cor. 3:14-16), Israel will come to accept her Messiah.
Hidden
It would not be known that Ruth and Boaz met on the threshing floor. It would therefore remain a meeting known only to Boaz and Ruth. At the Second Coming, the faithful remnant of Israel will flee through a cleft Mount of Olives (Zech. 14:4-5), be gathered by Him outside the land in the desert, and there they will see Him face to face (Ezek. 20:35). That will be a meeting hidden from the rest of the world, just as Joseph revealed himself to his brothers, without anyone else being present (Gen. 45:1).
Another Redeemer
Boaz declares that there is another redeemer. From Ruth 4:13 onward, Boaz is described as acting as a redeemer, taking Ruth as his wife and fathering an heir by her. In the passage that follows, up to 4:13, the other redeemer and the role he plays are clearly revealed.