13For "everyone who calls on the name of the Lord will be saved." 14How then will they call on him in whom they have not believed? And how are they to believe in him of whom they have never heard? And how are they to hear without someone preaching? 15And how are they to preach unless they are sent? As it is written, "How beautiful are the feet of those who preach the good news!" 16But they have not all obeyed the gospel. For Isaiah says, "Lord, who has believed what he has heard from us?" 17So faith comes from hearing, and hearing through the word of Christ.