Revelation 14:1-5 NLT

Then I saw the Lamb standing on Mount Zion, and with him were 144,000 who had his name and his Father's name written on their foreheads. [2] And I heard a sound from heaven like the roar of mighty ocean waves or the rolling of loud thunder. It was like the sound of many harpists playing together. [3] This great choir sang a wonderful new song in front of the throne of God and before the four living beings and the twenty-four elders. No one could learn this song except the 144,000 who had been redeemed from the earth. [4] They have kept themselves as pure as virgins, following the Lamb wherever he goes. They have been purchased from among the people on the earth as a special offering to God and to the Lamb. [5] They have told no lies; they are without blame.