This Sunday, we will hear from Romans 10:14-21.
Paul has just established (in 10:1-13) that the word of faith that we proclaim is one of the righteousness of God, based on faith.
Now, he explains how that happens - as those who trust in Christ proclaim the gospel to the world. It began thousands of years ago, in the nation of Israel, and then exploded out to the ends of the earth. And God is still saving his people, according to his sovereign redemptive plan, even today.