V.1-12 Boaz was obviously an upright man. According to Scripture (Lev. 25:25-28), he knew that the closest relative to Ruth’s dead husband had the responsibility to buy back (redeem) the land formerly owned by him. So Boaz meets this closer relative in the city. Ruth is a picture of Israel, which will come into great blessing in the future millennium “E” to “F” on your chart. However, we may also see her as a picture of a lost sinner. The close relative can be a picture of “the law,” which could never redeem. But the law has to have its opportunity, which it did, though it could never do the work. Christ alone can redeem us from sin. Boaz is free to take Ruth to be his wife.
V.13-22 Later a son is born. He becomes the ancestor of great King David. But from Matthew 1, we can trace this line to a greater than David, and thereby learn that this is more than an earthly love story, for it leads us on to the birth of the Son of Man, the Lord Jesus. In David the nation of Israel rejoiced, but in Him who was great David’s greater Son, all the nations of the earth will rejoice. (In the millennium).