Jerome : (Verse 13) And it shall be in that day: the great trumpet shall sound, and those who were lost from the land of Assyria and those who were cast out into the land of Egypt shall come, and they shall worship the Lord on the holy mountain in Jerusalem. LXX: And it shall be in that day, a great trumpet shall sound; and those who perished in the region of Assyria and those who perished in Egypt shall come; and they shall worship the Lord on the holy mountain in Jerusalem. In this place, the Jews make empty vows to themselves, that at the end of the world, when their Antichrist, as it is said, shall come, the dispersed people from Assyria and the land of Egypt shall gather together and come to Jerusalem, and having built the temple, worship the Lord their God. That which cannot stand completely according to the letter. For it does not only refer to the Assyrians and Egyptians, but to the whole world, which will believe in Christ. Therefore, this signifies that in the last trumpet, according to the Apostle Paul (1 Cor. XV), all those who perished in Assyria and Egypt will come to the Lord. He did not say all the children of Israel, but all those who perished, indicating the multitude of the Gentiles, who, bound by idolatry, magic, and the arts of philosophy, will come to the faith of Christ and worship Him in the Church. The great trumpet can be understood as the Gospel message, of which we also read in the same Prophet: Ascend to the high mountain, you who bring good news to Zion; lift up your voice with strength, you who bring good news to Jerusalem (Isaiah 40:9). Therefore, that mountain is holy and that Jerusalem is the one of which we have often spoken: You have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, and to myriads of angels, and to the assembly of the firstborn who are enrolled in heaven (Hebrews 12:22). Up to this point, we have spoken about the end of the world starting from the place where we began: Behold, the Lord will scatter the earth and make it bare (Above, XXIV, 1), which is contained in the present volume. Now, with the help, or rather inspiration, of Christ, let us move on to the ninth, which will have the beginning of another prophecy. — Commentary on Isaiah