Revelation 14:3

14:3 and they were singing a new song before the throne and before the four living creatures and the elders. No one was able to learn the song except the one hundred and forty-four thousand who had been redeemed from the earth.

Revelation 21:4

21:4 He will wipe away every tear from their eyes, and death will not exist any more – or mourning, or crying, or pain, for the former things have ceased to exist.”