moreover Ruth the Moabitess, the wife of Mahlon, have I purchased to be my wife, to raise up the name of the dead upon his inheritance, that the name of the dead be not cut off from among his brethren and from the gate of his place: ye are witnesses this day.
Ruth 4:8 And he that had the right of redemption said to Boaz, Buy for thyself; and he drew off his sandal.
Ruth 4:9 And Boaz said to the elders and all the people, Ye are witnesses this day, that I have bought all that was Elimelech's, and all that was Chilion's and Mahlon's, of the hand of Naomi;
Ruth 4:10 moreover Ruth the Moabitess, the wife of Mahlon, have I purchased to be my wife, to raise up the name of the dead upon his inheritance, that the name of the dead be not cut off from among his brethren and from the gate of his place: ye are witnesses this day.
Ruth 4:11 And all the people that were in the gate and the elders said, [We are] witnesses. Jehovah make the woman that cometh into thy house like Rachel and like Leah, which two did build the house of Israel; and acquire power in Ephratah, and make thyself a name in Bethlehem;
Ruth 4:12 and let thy house become like the house of Pherez, whom Tamar bore to Judah, of the seed which Jehovah shall give thee of this young woman.
The verse centers on "moreover", "ruth", "moabitess", "wife", "mahlon", "purchased", and "raise". It is saying that the verse draws attention to "moreover" and "ruth", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 9's "And Boaz said to the elders and..." into verse 11's "And all the people that were in...", so "moreover" and "ruth" belong inside that flow. In Ruth context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "moreover" and "ruth" with trust shaped by these words, not by a vague optimism outside the passage.