isaiah 66:19 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. - Free Bible Online

      19. sign--a banner on a high place, to indicate the place of meeting for the dispersed Jewish exiles, preparatory to their return to their land (Isa 5:26; 11:12; 62:10).
      those that escape of them--the Gentile survivors spared by God (see on Isa 66:18; Zec 14:16). Isa 2:2, 3; Mic 5:7; and Zec 14:16-19 represent it, not that the Jews go as missionaries to the Gentiles, but that the Gentiles come up to Jerusalem to learn the Lord's ways there.
      Tarshish--Tartessus in Spain, in the west.
      Pul--east and north of Africa: probably the same as Philœ, an island in the Nile, called by the Egyptians Pilak, that is, the border country, being between Egypt and Ethiopia [BOCHART].
      Lud--the Libyans of Africa (Ge 10:13), Ludim being son of Mizraim (Egypt): an Ethiopian people famous as bowmen (Jer 46:9): employed as mercenaries by Tyre and Egypt (Eze 27:10; 30:5).
      Tubal--Tibarenians, in Asia Minor, south of the Caucasus, between the Black Sea and Araxes. Or, the Iberians [JOSEPHUS]. Italy [JEROME].
      Javan--the Greeks; called Ionians, including all the descendants of Javan, both in Greece and in Asia Minor (Ge 10:2-4).
      my glory . . . Gentiles-- (Mal 1:11).

JFB.