Revelation 14:1-5

I looked and saw the Lamb standing on Mount Zion! With him were a hundred and forty-four thousand, who had his name and his Father's name written on their foreheads. Then I heard a sound from heaven that was like a roaring flood or loud thunder or even like the music of harps. And a new song was being sung in front of God's throne and in front of the four living creatures and the elders. No one could learn that song, except the one hundred and forty-four thousand who had been rescued from the earth. All these are pure virgins, and they follow the Lamb wherever he leads. They have been rescued to be presented to God and the Lamb as the most precious people on earth. They never tell lies, and they are innocent.