Beautiful Feet!
Paul quotes Isa 52:7, which refers to those who announce the good news that the exiled people of Israel will be able to return to their own land. Paul applies the verse to Christian preachers, who proclaim the ultimate “good news” about God’s intervention on behalf of all people in Christ (1:16).
Isaiah (Isa. 53:1) prophesies that not all will believe. In the context of Romans 9–11, Paul is thinking especially of the Jews who did not believe.
Hearing the gospel is necessary for salvation, but hearing is not enough: people must also respond with personal trust.
One can come to faith only through hearing the gospel, and the specific message that must be heard is the word of Christ, that is, the good news about Jesus Christ as the crucified and risen Savior
word of Christ, that is, the good news about Jesus Christ as the crucified and risen Savior.