The book of Ruth wants us to know the wisdom of waiting on the Lord and to trust that the Lord will provide redemption through an heir who will bring salvation.
This ministry of the Gospel, this standing in the stead and by the command of our Lord Jesus Christ, is demanding business and is entirely unsuitable for the weak-willed or those who compromise with the zeitgeist of the day.
On the one hand, forgiving as Jesus commands us feels impossible. But on the other hand, forgiving as we have been forgiven is the most natural thing in the world