Romans 10:13-17

For all those who have called upon the name of the Lord shall be saved. Then in what way will those who have not believed in him call upon him? Or in what way will those who have not heard of him believe in him? And in what way will they hear of him without preaching? And truly, in what way will they preach, unless they have been sent, just as it has been written: "How beautiful are the feet of those who evangelize peace, of those who evangelize what is good!" But not all are obedient to the Gospel. For Isaiah says: "Lord, who has believed our report?" Therefore, faith is from hearing, and hearing is through the Word of Christ.