REV 14:3

3 And they sung as a new song before the seat of God, and before the four beasts, and the elder men. And no man might say the song, but those hundred thousand and four and forty thousand, that be bought from the earth. (And they sang a new song before God’s throne, and the four creatures, and the elders. And no man could learn the song, but those hundred and forty-four thousand, who be bought or ransomed from the earth.)