How can they believe at work, at university, in churches, on the streets, in sports, in leisure unless someone preaches it to them? How can they know of the eternal hope which lays beautifully inside of you? How can they know? But some of us are ashamed, some of us are scared, some of us want to but don't know how, and some of us do declare it and thus suffer the reproach and praise the acceptance of our message. How can they believe unless we preach, unless we declare it with our words and live it with our lives.
For "everyone who calls on the name of the Lord will be saved."
How 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? And 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!" But they have not all obeyed the gospel. For Isaiah says, "Lord, who has believed what he has heard from us?" So faith comes from hearing, and hearing through the word of Christ. Romans 10:13-17