Isaiah 65:17-19

Verse 17

I create new heavens and a new earth - This has been variously understood. Some Jews and some Christians understand it literally. God shall change the state of the atmosphere, and render the earth more fruitful. Some refer it to what they call the Millennium; others, to a glorious state of religion; others, to the re-creation of the earth after it shall have been destroyed by fire. I think it refers to the full conversion of the Jews ultimately; and primarily to the deliverance from the Babylonish captivity.
Verse 18

Rejoice for ever in that which I create "Exult in the age to come which I create" - So in Isa 9:5 אבי עד abi ad, πατηρ του μελλοντος αιωνος, "the father of the age to come," Sept. See Bishop Chandler, Defence of Christianity, p. 136.
Verse 19

The voice of weeping, etc. - "Because of untimely deaths shall no more be heard in thee; for natural death shall not happen till men be full of days; as it is written, Isa 65:20 : There shall be no more thence an infant of days, i.e., the people shall live to three or five hundred years of age, as in the days of the patriarchs; and if one die at one hundred years, it is because of his sin; and even at that age he shall be reputed an infant; and they shall say of him, An infant is dead. These things shall happen to Israel in the days of the Messiah." - Kimchi.
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