Romans 10:10-15

For it is by believing in your heart that you are made right with God, and it is by openly declaring your faith that you are saved. As the Scriptures tell us, “Anyone who trusts in him will never be disgraced.” Jew and Gentile are the same in this respect. They have the same Lord, who gives generously to all who call on him. For “Everyone who calls on the name of the LORD will be saved.” But how can they call on him to save them unless they believe in him? And how can they believe in him if they have never heard about him? And how can they hear about him unless someone tells them? And how will anyone go and tell them without being sent? That is why the Scriptures say, “How beautiful are the feet of messengers who bring good news!”