Revelation 14:3

And they were singing what seemed like a new canticle before the throne and before the four living creatures and the elders. And no one was able to recite the canticle, except those one hundred and forty-four thousand, who were redeemed from the earth

Other versions

King James Version

And they sung as it were a new song before the throne, and before the four beasts, and the elders: and no man could learn that song but the hundred and forty and

English Standard Version

and they were singing a new song before the throne and before the four living creatures and before the elders. No one could learn that song except the 144,000 who had been redeemed from the earth.

New International Version

And they sang a new song before the throne and before the four living creatures and the elders. No one could learn the song except the 144,000 who had been redeemed from the earth.