Revelation 14:1-5 (HCSB)
1 Then I looked, and there on Mount Zion stood the Lamb, and with Him were 144,000 who had His name and His Father’s name written on their foreheads.
2 I heard a sound from heaven like the sound of cascading waters and like the rumbling of loud thunder. The sound I heard was also like harpists playing on their harps.
3 They sang a new song before the throne and before the four living creatures and the elders, but no one could learn the song except the 144,000 who had been redeemed from the earth.
4 These are the ones not defiled with women, for they have kept their virginity. These are the ones who follow the Lamb wherever He goes. They were redeemed from the human race as the firstfruits for God and the Lamb.
5 No lie was found in their mouths; they are blameless.