Revelation 14:2-8

And I heard a voice from heaven, like the sound of great waters and like the rumbling of mighty thunder; and the voice that I heard [seemed like music and] was like the sound of harpists playing on their harps. And they sang a new song before the throne [of God] and before the four living creatures and the elders; and no one could learn the song except the hundred and forty-four thousand who had been purchased (ransomed, redeemed) from the earth. [Rev 7:4-8] These are the ones who have not been defiled [by relations] with women, for they are celibate. These are the ones who follow the Lamb wherever He goes. These have been purchased and redeemed from among men [of Israel] as the first fruits [sanctified and set apart for special service] for God and the Lamb. [Mark 8:34] No lie was found in their mouth, for they are blameless (spotless, untainted, beyond reproach). Then I saw another angel flying in midheaven, with an eternal gospel to preach to the inhabitants of the earth, to every nation and tribe and language and people; [Rom 1:1-4; 1 Cor 15:3-5; Gal 1:6, 7] and he said with a loud voice, “Fear God [with awe and reverence], and give Him glory [and honor and praise in worship], because the hour of His judgment has come; [with all your heart] worship Him who created the heaven and the earth, the sea and the springs of water.” Then another angel, a second one, followed, saying, “Fallen, fallen is Babylon the great, she who has made all nations drink the wine of the passion of her immorality [corrupting them with idolatry].” [Is 21:9; Dan 4:30, 31; Rev 17:2]