For I know their works and their thoughts: it shall come, that I will gather all nations and tongues; and they shall come, and see my glory. And I will set a sign among them, and I will send those that escape of them unto the nations, to Tarshish, Pul, and Lud, that draw the bow, to Tubal, and Javan, to the isles afar off, that have not heard my fame, neither have seen my glory; and they shall declare my glory among the Gentiles. And they shall bring all your brethren for an offering unto the LORD out of all nations upon horses, and in chariots, and in litters, and upon mules, and upon swift beasts, to my holy mountain Jerusalem, saith the LORD, as the children of Israel bring an offering in a clean vessel into the house of the LORD. And I will also take of them for priests and for Levites, saith the LORD.
God knows the works and thoughts of His people and when He rains down judgment on them, they will see His glory. He will give them some supernatural sign, which we cannot identify at present. Those who escape will go to the ends of the earth with the news of the Lord’s power and fame. Then the Gentiles will mobilize their transportation facilities to carry dispersed Israelites back to the land, as if they were bringing an offering to Jehovah. God will reinstitute the priesthood and the Levitical order for service in the millennial temple.