Romans 10:19

"But I say, Did not Israel know?" For what if they heard, he means, but did not know what was said, nor understand that these were the persons sent? Are they not to be forgiven for their ignorance? By no means. For Isaiah had described their character in the words, "How beautiful are the feet of them that preach the Gospel of peace." And before him the Lawgiver himself. Hence he proceeds. "First Moses saith, I will provoke you to jealousy by them that are no people, and by a foolish nation I will anger you." And so they ought even from him to have been able to distinguish the preachers, not from the fact of these disbelieving only, not from the fact of their preaching peace, not from the fact of their bringing the glad tidings of those good things, not from the word being sown in every part of the world, but from the very fact of their seeing their inferiors, those of the Gentiles, in greater honor. For what they had never heard, nor their forefathers, that wisdom did these on a sudden embrace. And this was a mark of such intense honor, as should gall them, and lead them to jealousy, and to recollection of the prophecy of Moses, which said, "I will provoke you to jealousy by them that are no people." For it was not the greatness of the honor alone that was enough to throw them upon jealousy, but the fact too that a nation had come to enjoy these things which was of so little account that it could hardly be considered a nation at all. "For I will provoke you to jealousy, by them which are no nation, and by a foolish nation will I anger you." For what more foolish than the Greeks (Heathen)? or what of less account? See how by every means God had given from of old indications and clear signs of these times, in order to remove their blindness. For it was not any little corner in which the thing was done, but in land, and in sea, and in every quarter of the globe.