Isaiah 65:20

20. No more… an infant of days There is considerable variety of not very clever comment on this passage. Nor is it easy to be made clear. Evidently the thread of illustration is not broken from Isaiah 65:17, wherein Jehovah, under poetic imagery, is creating a new heaven and a new earth perhaps even from Isaiah 65:13, in which contrast is drawn between the status of the righteous and that of the unrighteous. In Isaiah 65:20 the characteristic blessedness of the new order of things in the great future is that of longevity: “No more thence (from holy Jerusalem) shall be (rather, shall go, perhaps to burial) an infant of days.” To agree with second clause of this verse this must mean: No one shall die in infancy. The old man and the one now an infant shall alike enjoy the full covenant blessing made to Abraham when he was a hundred years old. (And even if early death perchance occur, it shall be no bar to the promise of the inheritance. Genesis 17:17.) In the second clause comes the contrast, like that of Isaiah 65:13-16.

For the child shall die a hundred years old This seems to have a meaning touching child-likeness in simplicity, truthfulness, sincerity, and standing in a right relationship with God for a hundred years, or for an indefinite length of life. But every sinner, though “a hundred years old,” shall die accursed. His long life has nothing in it to redeem his character from disgrace.