Isaiah's prophecy about the swift feet of those who preach peace refers directly to the Apostles. In the prophecy it further speaks of the reign of the Lord and the spread of divine salvation throughout the whole universe (Isa 52:10). "Do you see," says Saint John Chrysostom, "how by the very manner of preaching the Apostle proves that they are preachers, foreseen and sent? The Apostles, going around the universe, proclaimed nothing other than ineffable blessings and the peace of God with men. Therefore, if salvation depends on calling, calling on faith, faith on hearing, and hearing on preaching, and if the Apostles were sent and preached, then it is clear that unbelief is the Jews' own fault. On God's part everything has been done." "The Jews again raise a new objection, saying: if the Apostles were sent by God, then all ought to have obeyed them. The Prophet foretold this also from of old. What are you saying? he asked. Is it this, that not all obeyed the Gospel? But Isaiah foretold this long ago. More precisely, he foretold not only this, but something much greater. What exactly? 'Lord, who has believed our report?'" That is, very few. Since the Jews constantly sought miracles, desired to see the Resurrection, and many eagerly demanded this, the Apostle says: "hearing is by the word of God." The preachers did not speak their own things, but proclaimed what they had heard from God. This is much higher than miracles. God, when He speaks and when He works wonders, must equally be believed and obeyed, because works and miracles are produced by His word. But perhaps, although the word of the Lord was proclaimed, the Hebrews did not hear it? Explaining the Apostle's answer to this, given in the Psalmist's comparative words, "Their proclamation has gone out into all the earth," blessed Theodoret observes: "Was it possible for the Jews not to hear, when the Gentiles heard in the whole universe? The preachers of truth proclaimed the preaching first to the Jews. For the Lord Himself said to them, 'Go rather to the lost sheep of the house of Israel' (Mt 10:6). And in the Acts of the Apostles it is said, 'It was necessary that the word of God should be spoken to you first' (Acts 13:46)." It remains to suppose that the Hebrews heard the Gospel preaching but did not understand it or feel it. From this side also, as is clear from what follows, they could have no excuse, because they knew and understood everything in Christianity, but persisted in obstinacy.