Revelation 14:1-3

¹I saw, and behold, the Lamb standing on Mount Zion, and with him one hundred forty-four thousand, having his name, and the name of his Father, written on their foreheads. ²I heard a sound from heaven, like the sound of many waters, and like the sound of a great thunder. The sound which I heard was like that of harpers playing on their harps. ³They sing something like a new song before the throne, and before the four living creatures and the elders. None could learn the song except the one hundred forty-four thousand, those who had been redeemed out of the earth.