As Paul closes this section of Roman he wants his readers to bow in wonder and worship at the wisdom of God’s plan of salvation through Jesus. We see that God still has a plan to save Jewish people, even those who are currently hardened against the gospel. This reminds us that God can save the most unlikely and hard-hearted people. God’s plan is an extraordinary one, since he uses the attractiveness of his mercy in the life of the Gentiles to bring Jewish people to Jesus. From this we learn that God’s mercy at work in our lives and in our churches is deeply attractive to others, and God will use this to bring people to Christ. No-one deserves salvation, neither Jews nor gentiles, but it is all by God’s mercy and therefore all the glory is due to him.