Question: “In Isaiah 65 or 66 there is a verse that talks about something like death. Will there be death in heaven according to that verse?”

Answer: “Never again will there be in it an infant who lives but a few days, or an old man who does not live out his years; he who dies at a hundred will be thought a mere youth; he who fails to reach a hundred will be considered accursed” (Isaiah 65:20, NIV).

I believe this is the verse in question. According to the first half of this verse there will never again be anyone in heaven who does not live out their years. In the context of the Bible, this means no more death at all (see Revelation 21:4). The second half of the verse is speaking in “what ifs.” “What if” a man in heaven died at 100 years of age, (he won’t because there is no more death in heaven, but if he did), he would be considered a “mere youth.” And if anyone failed to reach 100 years of age in heaven, (they won’t because we will all live out our years which are eternal), then he would be considered accursed of God. But, the Bible says, “Nothing accursed will be found there anymore. But the throne of God and of the Lamb will be in it, and his servants will worship Him” Revelation 22:3, NRSV).