[13] For whosoever shall call upon the name of the Lord shall be saved. [14] How then shall they call on him in whom not believed? and how shall they believe in him of whom not heard? and how shall they hear without a preacher? [15] And how shall they preach, 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!