How?

15 And how shall they preach, except they be sent? as it is written, How beautiful are the feet of them that preach the gospel of peace, and bring glad tidings of good things! 16 But they have not all obeyed the gospel. For Esaias saith, Lord, who hath believed our report? 17 So then faith cometh by hearing, and hearing by the word of God. 18 But I say, Have they not heard? Yes verily, Their sound went into all the earth, And their words unto the ends of the world. Romans 10:15‭-‬18 KJV https://bible.com/bible/1/rom.10.15-18.KJV