Romans 10:5-15

Moses writes this about the righteousness that is by the law: “The person who does these things will live by them.” But the righteousness that is by faith says: “Do not say in your heart, ‘Who will ascend into heaven?’ ” (that is, to bring Christ down) “or ‘Who will descend into the deep?’ ” (that is, to bring Christ up from the dead). But what does it say? “The word is near you; it is in your mouth and in your heart,” that is, the message concerning faith that we proclaim: If you declare with your mouth, “Jesus is Lord,” and believe in your heart that God raised him from the dead, you will be saved. For it is with your heart that you believe and are justified, and it is with your mouth that you profess your faith and are saved. As Scripture says, “Anyone who believes in him will never be put to shame.” For there is no difference between Jew and Gentile—the same Lord is Lord of all and richly blesses all who call on him, for, “Everyone who calls on the name of the Lord will be saved.”
How, then, can they call on the one they have not believed in? And how can they believe in the one of whom they have not heard? And how can they hear without someone preaching to them? And how can anyone preach unless they are sent? As it is written: “How beautiful are the feet of those who bring good news!”