20 There shall be no more thence an infant of days, nor an old man that hath not filled his days: for the child shall die an hundred years old; but the sinner being an hundred years old shall be accursed.
20 No more shall there be in it an infant who lives but a few days, or an old man who does not fill out his days, for the young man shall die a hundred years old, and the sinner a hundred years old shall be accursed.
20 No more babies dying in the cradle, or old people who don't enjoy a full lifetime; One-hundredth birthdays will be considered normal - anything less will seem like a cheat.
20 "No more shall an infant from there live but a few days, Nor an old man who has not fulfilled his days; For the child shall die one hundred years old, But the sinner being one hundred years old shall be accursed.
20 "No longer will babies die when only a few days old. No longer will adults die before they have lived a full life. No longer will people be considered old at one hundred! Only the cursed will die that young!
Matthew Henry's Commentary on Isaiah 65:20
Commentary on Isaiah 65:17-25
(Read Isaiah 65:17-25)
In the grace and comfort believers have in and from Christ, we are to look for this new heaven and new earth. The former confusions, sins and miseries of the human race, shall be no more remembered or renewed. The approaching happy state of the church is described under a variety of images. He shall be thought to die in his youth, and for his sins, who only lives to the age of a hundred years. The event alone can determine what is meant; but it is plain that Christianity, if universal, would so do away violence and evil, as greatly to lengthen life. In those happy days, all God's people shall enjoy the fruit of their labours. Nor will children then be the trouble of their parents, or suffer trouble themselves. The evil dispositions of sinners shall be completely moritified; all shall live in harmony. Thus the church on earth shall be full of happiness, like heaven. This prophecy assures the servants of Christ, that the time approaches, wherein they shall be blessed with the undisturbed enjoyment of all that is needful for their happiness. As workers together with God, let us attend his ordinances, and obey his commands.