Revelation 14:3-5 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-four thousand, who were redeemed from the earth.

KJ2000⁽ⁱ⁾ ³ 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-four thousand, who were redeemed from the earth. ⁴ These are they who were not defiled with women; for they are virgins. These are they who follow the Lamb wherever he goes. These were redeemed from among men, being the first fruits unto God and to the Lamb. ⁵ And in their mouth was found no guile: for they are without fault before the throne of God.