Isaiah
Isaiah 66:19BSB·traditional attribution

I will establish a sign among them, and I will send survivors from among them to the nations—to Tarshish, Put, and the archers of Lud; to Tubal, Javan, and the islands far away who have not heard of My fame or seen My glory. So they will proclaim My glory among the nations.

Matthew Henry Presbyterian @wholebiblehenry

These verses, like the pillar of cloud and fire, have a dark side towards the enemies of God's kingdom and all that are rebels against his crown, and a bright side towards his faithful loyal subjects. Probably they refer to the Jews in captivity in Babylon, of whom some are said to have been sent thither for their hurt, and with them God here threatens...

Commenting on Isaiah 66:15-24

John Gill Reformed Baptist @doctorgill

And I will set a sign among them,.... Either a miraculous sign, something wonderful, as the word is often used, Exo 4:8, not the effusion of the Spirit on the day of Pentecost, in the presence of men of all nations; or the miracles wrought in the Gentile world by the apostles, in confirmation of the Gospel; but rather the wonderful conversion of the Jews...

Jamieson-Fausset-Brown Reformed @jfbcommentary

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; Isa 11:12; Isa 62:10). those that escape of them--the Gentile survivors spared by God (see on Isa 66:18; Zac 14:16).