Isaiah 66:24
22 “For just as the new heavens and the new earth I am about to make will remain standing before me,” says the Lord, “so your descendants and your name will remain. 23 From one month to the next and from one Sabbath to the next, all people will come to worship me,” says the Lord. 24 “They will go out and observe the corpses of those who rebelled against me, for the maggots that eat them will not die, and the fire that consumes them will not die out. All people will find the sight abhorrent.”
Zechariah 14:16
15 This is the kind of plague that will devastate horses, mules, camels, donkeys, and all the other animals in those camps. 16 Then all who survive from all the nations that came to attack Jerusalem will go up annually to worship the King, the Lord of Heaven’s Armies, and to observe the Feast of Shelters. 17 But if any of the nations anywhere on earth refuse to go up to Jerusalem to worship the King, the Lord of Heaven’s Armies, they will get no rain. 18 If the Egyptians will not do so, they will get no rain—instead there will be the kind of plague that the Lord inflicts on any nations that do not go up to celebrate the Feast of Shelters.
Notes and References
"... Zechariah 14:16 and Isaiah 66:23 are connected by several verbal similarities: ('and it will happen') introduces both of them; ('year after year') in Zechariah, ('new moon after new moon and sabbath after sabbath') in Isaiah; ('in order to worship') in both. The following verse in Isaiah, v. 24, is connected with Zechariah 14:12 by a thematic similarity, the punishment of the sinners in Isaiah and that of the soldiers who have fought against Jerusalem in Zechariah. This punishment is described in a most distasteful manner: 'Their flesh shall rot while they are still on their feet; their eyes shall rot in their sockets, and their tongues shall rot in their mouths'. Trito-Isaiah's assertion, 'their worm shall not die', appears to be an allusion to the drastic imagery in Zechariah. Claus Westermann notes that the intention in Isaiah 66:23 appears to go even further than Zechariah, since in Zechariah the survivors of the judgment of the nations come up to Jerusalem year by year, but in Isaiah 'all flesh' will worship Yahweh every new moon and sabbath ... Again, Isaiah is dependent on Zechariah ..."
Nurmela, Risto "The Growth of the Book of Isaiah Illustrated by Allusions in Zechariah" in Boda, Mark J., and Michael H. Floyd, (ed.) Bringing out the Treasure: Inner Biblical Allusion in Zechariah 9-14 (pp. 257-258) Sheffield Academic Press, 2003