Revelation 14:3-5

3And they 1sang 2a new song before the throne and before the 3four living creatures and the 4elders; and 5no one could learn the song except the 6one hundred and forty-four thousand who had been 7purchased from the earth. 48These are the ones who have not been defiled with women, for they 9have kept themselves chaste. These are the ones who 10follow the Lamb wherever He goes. These have been 11purchased from among men 12as first fruits to God and to the Lamb. 5And 13no lie was found in their mouth; they are 14blameless.