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!
And ... preach except sent? - q.d., 'True, the same Lord over all is rich unto all alike that call upon Him; but this calling implies believing, and believing hearing, and hearing preaching, and preaching a mission to preach. Why, then, take ye it so ill, O children of Abraham, that in obedience to our heavenly mission (Acts 26:16-18) we preach among the Gentiles the unsearchable riches of Christ?'
As it is written (Isaiah 52:7 ), How beautiful are the feet of them that preach the gospel of peace, and bring glad tidings of good things! The whole chapter of Isaiah from which this is taken, and the three that follow, are so richly Messianic, that there can be no doubt "the glad tidings" there spoken of announce a more glorious release than that of Judah from the Babylonian captivity, and the very feet of its preachers are called "beautiful" for the sake of their message. What a call and what encouragement is here to missionary activity in the Church!
All this Was Foretold in their own Scriptures, together with theRejection of the Message by the Jews, and its Reception by the Gentiles (Romans 10:16-21)