Key Verse 10
Bethlehem, early in the morning.
Boaz is sitting at the town gate.
He stops a relative of his and ten elders of the city, asking them all to sit, too. He has some business to discuss with them.
He informs the relative that the land of Elimelech, the late husband of Naomi, is available for claim. The man is happy and claims it. Boaz tells him then that if he claims the land, he must also take the foreigner Ruth as his wife to carry on the family name of Elimelech and his son. At this, the man refuses, telling Boaz to redeem it instead, as Boaz is next in line.
He hands Boaz his sandal to conclude the matter.*
To become a kinsman redeemer, Boaz would need to marry this foreigner, have children, and then allow them to carry on the name of Ruth's late husband. I don't know much about children, but I am sure that people who have a child want him/her to carry on the name and history of the parents. Boaz had to be willing to give up that right so the children could be identified with someone else. He was willing to do it, though. He did not grumble, but immediately declared it to be done.
I think Boaz really cared for Ruth. No one would do such a thing out of duty.
Similarly, our God paid a price to redeem us. He was willing to do it because of love. That's what John 3:16 says. Praise the God who loves us enough to redeem us, foreigners set apart from Him and without a hope! :)
One Word: Love Redeems
* The pronoun sense here is a little ambiguous. See verse 8: "So the kinsman-redeemer said to Boaz, 'Buy it yourself.' And he removed his sandal."